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Annotations
Attributes
Diagrams
Facets
Instances
Properties
Source
Used by
Imported schema v1.0
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
Implementation of an XML Schema describing a resource to 
be used in the Virtual Observatory Project.  Based on "Resource 
Metadata for the Virtual Observatory", Version 0.8, 
February 2002 by Bob Hanisch et al.
Properties
attribute form default: unqualified
element form default: unqualified
version: 1.02
Element vr:Resource / validationLevel
Namespace No namespace
Annotations
 
A numeric grade describing the quality of the
resource description, when applicable, 
to be used to indicate the confidence an end-user
can put in the resource as part of a VO application
or research study.
 
See vr:ValidationLevel for an explanation of the
allowed levels.
 
Note that when this resource is a Service, this
grade applies to the core set of metadata.
Capability and interface metadata, as well as the
compliance of the service with the interface
standard, is rated by validationLevel tag in the 
capability element (see the vr:Service complex
type).
Diagram
Diagram v1_0.tmp#ValidationLevel v1_0.tmp#Validation_validatedBy v1_0.tmp#Validation
Type vr:Validation
Type hierarchy
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
validatedBy vr:IdentifierURI required 
The IVOA ID of the registry or organisation that
assigned the validation level.
Source
 
<xs:element name="validationLevel" type="vr:Validation" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>A numeric grade describing the quality of the resource description, when applicable, to be used to indicate the confidence an end-user can put in the resource as part of a VO application or research study.</xs:documentation>
    <xs:documentation>See vr:ValidationLevel for an explanation of the allowed levels.</xs:documentation>
    <xs:documentation>Note that when this resource is a Service, this grade applies to the core set of metadata. Capability and interface metadata, as well as the compliance of the service with the interface standard, is rated by validationLevel tag in the capability element (see the vr:Service complex type).</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Resource / title
Namespace No namespace
Annotations
 
the full name given to the resource
Diagram
Diagram
Type xs:token
Properties
content: simple
Source
 
<xs:element name="title" type="xs:token">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Title</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>the full name given to the resource</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Resource / shortName
Namespace No namespace
Annotations
 
a short name or abbreviation given to the resource.
 
This name will be used where brief annotations for
the resource name are required.  Applications may 
use to refer to this resource in a compact display.
 
One word or a few letters is recommended.  No more
than sixteen characters are allowed.
Diagram
Diagram v1_0.tmp#ShortName
Type vr:ShortName
Properties
content: simple
minOccurs: 0
Facets
maxLength 16
Source
 
<xs:element name="shortName" type="vr:ShortName" minOccurs="0">
  <xs:annotation>
    <xs:documentation>a short name or abbreviation given to the resource.</xs:documentation>
    <xs:documentation>This name will be used where brief annotations for the resource name are required. Applications may use to refer to this resource in a compact display.</xs:documentation>
    <xs:documentation>One word or a few letters is recommended. No more than sixteen characters are allowed.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Resource / identifier
Namespace No namespace
Annotations
 
Unambiguous reference to the resource conforming to the IVOA
standard for identifiers
Diagram
Diagram
Type vr:IdentifierURI
Properties
content: simple
Facets
pattern ivo://[\w\d][\w\d\-_\.!~\*'\(\)\+=]{2,}(/[\w\d\-_\.!~\*'\(\)\+=]+(/[\w\d\-_\.!~\*'\(\)\+=]+)*)?
Source
 
<xs:element name="identifier" type="vr:IdentifierURI">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Identifier</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>Unambiguous reference to the resource conforming to the IVOA standard for identifiers</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Resource / curation
Namespace No namespace
Annotations
 
Information regarding the general curation of the resource
Diagram
Diagram v1_0.tmp#Curation_publisher v1_0.tmp#Curation_creator v1_0.tmp#Curation_contributor v1_0.tmp#Curation_date v1_0.tmp#Curation_version v1_0.tmp#Curation_contact v1_0.tmp#Curation
Type vr:Curation
Properties
content: complex
Model publisher , creator* , contributor* , date* , version{0,1} , contact+
Children contact, contributor, creator, date, publisher, version
Instance
 
<curation>
  <publisher ivo-id="">{1,1}</publisher>
  <creator>{0,unbounded}</creator>
  <contributor ivo-id="">{0,unbounded}</contributor>
  <date role="representative">{0,unbounded}</date>
  <version>{0,1}</version>
  <contact>{1,unbounded}</contact>
</curation>
Source
 
<xs:element name="curation" type="vr:Curation">
  <xs:annotation>
    <xs:documentation>Information regarding the general curation of the resource</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Curation / publisher
Namespace No namespace
Annotations
 
Entity (e.g. person or organisation) responsible for making the 
resource available
Diagram
Diagram
Type vr:ResourceName
Properties
content: complex
Attributes
QName Type Fixed Default Use Annotation
ivo-id vr:IdentifierURI optional 
The URI form of the IVOA identifier for the resource refered to
Source
 
<xs:element name="publisher" type="vr:ResourceName">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Publisher</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>Entity (e.g. person or organisation) responsible for making the resource available</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Curation / creator
Namespace No namespace
Annotations
 
The entity (e.g. person or organisation) primarily responsible 
for creating the content or constitution of the resource.
 
A logo need only be provided for the first occurance.
When multiple logos are supplied via multiple creator 
elements, the application is free to choose which to
use.
Diagram
Diagram v1_0.tmp#Creator_name v1_0.tmp#Creator_logo v1_0.tmp#Creator
Type vr:Creator
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Model name , logo{0,1}
Children logo, name
Instance
 
<creator>
  <name ivo-id="">{1,1}</name>
  <logo>{0,1}</logo>
</creator>
Source
 
<xs:element name="creator" type="vr:Creator" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Creator</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>The entity (e.g. person or organisation) primarily responsible for creating the content or constitution of the resource.</xs:documentation>
    <xs:documentation>A logo need only be provided for the first occurance. When multiple logos are supplied via multiple creator elements, the application is free to choose which to use.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Creator / name
Namespace No namespace
Annotations
 
the name or title of the creating person or organization
 
Users of the creation should use this name in
subsequent credits and acknowledgements.
Diagram
Diagram
Type vr:ResourceName
Properties
content: complex
Attributes
QName Type Fixed Default Use Annotation
ivo-id vr:IdentifierURI optional 
The URI form of the IVOA identifier for the resource refered to
Source
 
<xs:element name="name" type="vr:ResourceName">
  <xs:annotation>
    <xs:documentation>the name or title of the creating person or organization</xs:documentation>
    <xs:documentation>Users of the creation should use this name in subsequent credits and acknowledgements.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Creator / logo
Namespace No namespace
Annotations
Diagram
Type xs:anyURI
Properties
Source
Element vr:Curation / contributor
Namespace No namespace
Annotations
 
Entity responsible for contributions to the content of
the resource
Diagram
Diagram
Type vr:ResourceName
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
ivo-id vr:IdentifierURI optional 
The URI form of the IVOA identifier for the resource refered to
Source
 
<xs:element name="contributor" type="vr:ResourceName" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Contributor</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>Entity responsible for contributions to the content of the resource</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Curation / date
Namespace No namespace
Annotations
 
Date associated with an event in the life cycle of the
resource.
 
This will typically be associated with the creation or 
availability (i.e., most recent release or version) of
the resource.  Use the role attribute to clarify.
Diagram
Diagram v1_0.tmp#UTCDateTime v1_0.tmp#Date_role v1_0.tmp#Date
Type vr:Date
Type hierarchy
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
role xs:string representative optional 
A string indicating what the date refers to.
 
While this vocabulary is uncontrolled, recognized strings 
include "creation", indicating the date that the resource 
itself was created, and "update", indicating when the
resource was updated last.  The default value, 
"representative", means that the date is a rough 
representation of the time coverage of the resource.
 
Note that this date refers to the resource; dates describing
the metadata description of the resource are handled by
the "created" and "updated" attributes of the Resource 
element.
Source
 
<xs:element name="date" type="vr:Date" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Date</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>Date associated with an event in the life cycle of the resource.</xs:documentation>
    <xs:documentation>This will typically be associated with the creation or availability (i.e., most recent release or version) of the resource. Use the role attribute to clarify.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Curation / version
Namespace No namespace
Annotations
 
Label associated with creation or availablilty of a version of 
a resource.
Diagram
Diagram
Type xs:token
Properties
content: simple
minOccurs: 0
Source
 
<xs:element name="version" type="xs:token" minOccurs="0">
  <xs:annotation>
    <xs:documentation>Label associated with creation or availablilty of a version of a resource.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Curation / contact
Namespace No namespace
Annotations
 
Information that can be used for contacting someone with
regard to this resource.
Diagram
Diagram v1_0.tmp#Contact_name v1_0.tmp#Contact_address v1_0.tmp#Contact_email v1_0.tmp#Contact_telephone v1_0.tmp#Contact
Type vr:Contact
Properties
content: complex
maxOccurs: unbounded
Model name , address{0,1} , email{0,1} , telephone{0,1}
Children address, email, name, telephone
Instance
 
<contact>
  <name ivo-id="">{1,1}</name>
  <address>{0,1}</address>
  <email>{0,1}</email>
  <telephone>{0,1}</telephone>
</contact>
Source
 
<xs:element name="contact" type="vr:Contact" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>Information that can be used for contacting someone with regard to this resource.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Contact / name
Namespace No namespace
Annotations
 
the name or title of the contact person.
 
This can be a person's name, e.g. "John P. Jones" or
a group, "Archive Support Team".
Diagram
Diagram
Type vr:ResourceName
Properties
content: complex
Attributes
QName Type Fixed Default Use Annotation
ivo-id vr:IdentifierURI optional 
The URI form of the IVOA identifier for the resource refered to
Source
 
<xs:element name="name" type="vr:ResourceName">
  <xs:annotation>
    <xs:documentation>the name or title of the contact person.</xs:documentation>
    <xs:documentation>This can be a person's name, e.g. "John P. Jones" or a group, "Archive Support Team".</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Contact / address
Namespace No namespace
Annotations
 
the contact mailing address
 
All components of the mailing address are given in one
string, e.g. "3700 San Martin Drive, Baltimore, MD 21218 USA".
Diagram
Diagram
Type xs:token
Properties
content: simple
minOccurs: 0
Source
 
<xs:element name="address" type="xs:token" minOccurs="0">
  <xs:annotation>
    <xs:documentation>the contact mailing address</xs:documentation>
    <xs:documentation>All components of the mailing address are given in one string, e.g. "3700 San Martin Drive, Baltimore, MD 21218 USA".</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Contact / email
Namespace No namespace
Annotations
 
the contact email address
Diagram
Diagram
Type xs:token
Properties
content: simple
minOccurs: 0
Source
 
<xs:element name="email" type="xs:token" minOccurs="0">
  <xs:annotation>
    <xs:documentation>the contact email address</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Contact / telephone
Namespace No namespace
Annotations
 
the contact telephone number
 
Complete international dialing codes should be given, e.g.
"+1-410-338-1234".
Diagram
Diagram
Type xs:token
Properties
content: simple
minOccurs: 0
Source
 
<xs:element name="telephone" type="xs:token" minOccurs="0">
  <xs:annotation>
    <xs:documentation>the contact telephone number</xs:documentation>
    <xs:documentation>Complete international dialing codes should be given, e.g. "+1-410-338-1234".</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Resource / content
Namespace No namespace
Annotations
 
Information regarding the general content of the resource
Diagram
Diagram v1_0.tmp#Content_subject v1_0.tmp#Content_description v1_0.tmp#Content_source v1_0.tmp#Content_referenceURL v1_0.tmp#Content_type v1_0.tmp#Content_contentLevel v1_0.tmp#Content_relationship v1_0.tmp#Content
Type vr:Content
Properties
content: complex
Model subject+ , description , source{0,1} , referenceURL , type* , contentLevel* , relationship*
Children contentLevel, description, referenceURL, relationship, source, subject, type
Instance
 
<content>
  <subject>{1,unbounded}</subject>
  <description>{1,1}</description>
  <source format="">{0,1}</source>
  <referenceURL>{1,1}</referenceURL>
  <type>{0,unbounded}</type>
  <contentLevel>{0,unbounded}</contentLevel>
  <relationship>{0,unbounded}</relationship>
</content>
Source
 
<xs:element name="content" type="vr:Content">
  <xs:annotation>
    <xs:documentation>Information regarding the general content of the resource</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Content / subject
Namespace No namespace
Annotations
 
a topic, object type, or other descriptive keywords 
about the resource.
 
Terms for Subject should be drawn from the IAU Astronomy 
Thesaurus (http://msowww.anu.edu.au/library/thesaurus/).
Diagram
Diagram
Type xs:token
Properties
content: simple
maxOccurs: unbounded
Source
 
<xs:element name="subject" type="xs:token" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Subject</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>a topic, object type, or other descriptive keywords about the resource.</xs:documentation>
    <xs:documentation>Terms for Subject should be drawn from the IAU Astronomy Thesaurus (http://msowww.anu.edu.au/library/thesaurus/).</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Content / description
Namespace No namespace
Annotations
 
An account of the nature of the resource
 
The description may include but is not limited to an abstract, 
table of contents, reference to a graphical representation of
content or a free-text account of the content.
Diagram
Diagram
Type xs:token
Properties
content: simple
Source
 
<xs:element name="description" type="xs:token">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Description</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>An account of the nature of the resource</xs:documentation>
    <xs:documentation>The description may include but is not limited to an abstract, table of contents, reference to a graphical representation of content or a free-text account of the content.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Content / source
Namespace No namespace
Annotations
 
a bibliographic reference from which the present resource is 
derived or extracted.
 
This is intended to point to an article in the published 
literature.  An ADS Bibcode is recommended as a value when 
available.
Diagram
Diagram
Type vr:Source
Properties
content: complex
minOccurs: 0
Attributes
QName Type Fixed Default Use Annotation
format xs:string optional 
The reference format.  Recognized values include "bibcode", 
referring to a standard astronomical bibcode 
(http://cdsweb.u-strasbg.fr/simbad/refcode.html).
Source
 
<xs:element name="source" type="vr:Source" minOccurs="0">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Source</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>a bibliographic reference from which the present resource is derived or extracted.</xs:documentation>
    <xs:documentation>This is intended to point to an article in the published literature. An ADS Bibcode is recommended as a value when available.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Content / referenceURL
Namespace No namespace
Annotations
 
URL pointing to a human-readable document describing this 
resource.
Diagram
Diagram
Type xs:anyURI
Properties
content: simple
Source
 
<xs:element name="referenceURL" type="xs:anyURI">
  <xs:annotation>
    <xs:documentation>URL pointing to a human-readable document describing this resource.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Content / type
Namespace No namespace
Annotations
 
Nature or genre of the content of the resource
Diagram
Diagram v1_0.tmp#Type
Type vr:Type
Properties
content: simple
minOccurs: 0
maxOccurs: unbounded
Facets
enumeration Other 
resource that does not fall into any of the category names
currently defined.
enumeration Archive 
Collection of pointed observations
enumeration Bibliography 
Collection of bibliographic reference, abstracts, and 
publications
enumeration Catalog 
Collection of derived data, primarily in tabular form
enumeration Journal 
Collection of scholarly publications under common editorial 
policy
enumeration Library 
Collection of published materials (journals, books, etc.)
enumeration Simulation 
Theoretical simulation or model
enumeration Survey 
Collection of observations covering substantial and
contiguous areas of the sky
enumeration Transformation 
A service that transforms data
enumeration Education 
Collection of materials appropriate for educational use, such
as teaching resources, curricula, etc.
enumeration Outreach 
Collection of materials appropriate for public outreach, such
as press releases and photo galleries
enumeration EPOResource 
Collection of materials that may be suitable for EPO
products but which are not in final product form, as in Type 
Outreach or Type Education.  EPOResource would apply,
e.g., to archives with easily accessed preview images or to
surveys with easy-to-use images.
enumeration Animation 
Animation clips of astronomical phenomena
enumeration Artwork 
Artists' renderings of astronomical phenomena or objects
enumeration Background 
Background information on astronomical phenomena or objects
enumeration BasicData 
Compilations of basic astronomical facts about objects,
such as approximate distance or membership in constellation.
enumeration Historical 
Historical information about astronomical objects
enumeration Photographic 
Publication-quality photographs of astronomical objects
enumeration Press 
Press releases about astronomical objects
enumeration Organisation 
An organization that is a publisher or curator of other 
resources.
enumeration Project 
A project that is a publisher or curator of other resources
enumeration Registry 
a query service for which response is a structured
description of resources.
Source
 
<xs:element name="type" type="vr:Type" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Type</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>Nature or genre of the content of the resource</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Content / contentLevel
Namespace No namespace
Annotations
 
Description of the content level or intended audience
Diagram
Diagram v1_0.tmp#ContentLevel
Type vr:ContentLevel
Properties
content: simple
minOccurs: 0
maxOccurs: unbounded
Facets
enumeration General 
Resource provides information appropriate for all users
enumeration Elementary Education 
Resource provides information appropriate for use in elementary
education (e.g. approximate ages 6-11)
enumeration Middle School Education 
Resource provides information appropriate for use in middle
school education (e.g. approximate ages 11-14)
enumeration Secondary Education 
Resource provides information appropriate for use in elementary
education (e.g. approximate ages 14-18)
enumeration Community College 
Resource provides information appropriate for use in 
community/junior college or early university education.
enumeration University 
Resource provides information appropriate for use in
university education
enumeration Research 
Resource provides information appropriate for
supporting scientific research.
enumeration Amateur 
Resource provides information of interest to
amateur astronomers.
enumeration Informal Education 
Resource provides information appropriate for education
at museums, planetariums, and other centers of informal learning.
Source
 
<xs:element name="contentLevel" type="vr:ContentLevel" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Subject</vm:dcterm>
      <vm:dcterm>Subject.ContentLevel</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>Description of the content level or intended audience</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Content / relationship
Namespace No namespace
Annotations
 
a description of a relationship to another resource.
 
Because this element's type is abstract, an xsi:type must be 
to indicate the set of relationship types that are valid.
Diagram
Diagram v1_0.tmp#Relationship_relationshipType v1_0.tmp#Relationship_relatedResource v1_0.tmp#Relationship
Type vr:Relationship
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Model relationshipType , relatedResource+
Children relatedResource, relationshipType
Instance
 
<relationship>
  <relationshipType>{1,1}</relationshipType>
  <relatedResource ivo-id="">{1,unbounded}</relatedResource>
</relationship>
Source
 
<xs:element name="relationship" type="vr:Relationship" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>a description of a relationship to another resource.</xs:documentation>
    <xs:documentation>Because this element's type is abstract, an xsi:type must be to indicate the set of relationship types that are valid.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Relationship / relationshipType
Namespace No namespace
Annotations
 
the named type of relationship
 
The VOResource Core specification defines a standard
set of names that are not enforced by this schema,
but are otherwise required by the spec.
Diagram
Diagram
Type xs:token
Properties
content: simple
Source
 
<xs:element name="relationshipType" type="xs:token">
  <xs:annotation>
    <xs:documentation>the named type of relationship</xs:documentation>
    <xs:documentation>The VOResource Core specification defines a standard set of names that are not enforced by this schema, but are otherwise required by the spec.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Relationship / relatedResource
Namespace No namespace
Annotations
 
the name of resource that this resource is related to.
Diagram
Diagram
Type vr:ResourceName
Properties
content: complex
minOccurs: 1
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
ivo-id vr:IdentifierURI optional 
The URI form of the IVOA identifier for the resource refered to
Source
 
<xs:element name="relatedResource" type="vr:ResourceName" minOccurs="1" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>the name of resource that this resource is related to.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Service / rights
Namespace No namespace
Annotations
 
Information about rights held in and over the resource.
 
This should be repeated for all Rights values that apply.
Diagram
Diagram v1_0.tmp#Rights
Type vr:Rights
Properties
content: simple
minOccurs: 0
maxOccurs: unbounded
Facets
enumeration public 
unrestricted, public access is allowed without 
authentication.
enumeration secure 
authenticated, public access is allowed.
enumeration proprietary 
only proprietary access is allowed with authentication.
Source
 
<xs:element name="rights" type="vr:Rights" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Rights</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>Information about rights held in and over the resource.</xs:documentation>
    <xs:documentation>This should be repeated for all Rights values that apply.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Service / capability
Namespace No namespace
Annotations
 
a description of a general capability of the
service and how to use it.
 
This describes a general function of the
service, usually in terms of a standard
service protocol (e.g. SIA), but not
necessarily.
 
A service can have many capabilities
associated with it, each reflecting different
aspects of the functionality it provides.
Diagram
Diagram v1_0.tmp#Capability_standardID v1_0.tmp#Capability_validationLevel v1_0.tmp#Capability_description v1_0.tmp#Capability_interface v1_0.tmp#Capability
Type vr:Capability
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Model validationLevel* , description{0,1} , interface*
Children description, interface, validationLevel
Instance
 
<capability standardID="">
  <validationLevel validatedBy="">{0,unbounded}</validationLevel>
  <description>{0,1}</description>
  <interface role="" version="1.0">{0,unbounded}</interface>
</capability>
Attributes
QName Type Fixed Default Use Annotation
standardID xs:anyURI optional 
A URI identifier for a standard service.
 
This provides a unique way to refer to a service
specification standard, such as a Simple Image Access service.
The use of an IVOA identifier here implies that a
VOResource description of the standard is registered and 
accessible.
Source
 
<xs:element name="capability" type="vr:Capability" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>a description of a general capability of the service and how to use it.</xs:documentation>
    <xs:documentation>This describes a general function of the service, usually in terms of a standard service protocol (e.g. SIA), but not necessarily.</xs:documentation>
    <xs:documentation>A service can have many capabilities associated with it, each reflecting different aspects of the functionality it provides.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Capability / validationLevel
Namespace No namespace
Annotations
 
A numeric grade describing the quality of the
capability description and interface, when applicable, 
to be used to indicate the confidence an end-user
can put in the resource as part of a VO application
or research study.
 
See vr:ValidationLevel for an explanation of the
allowed levels.
Diagram
Diagram v1_0.tmp#ValidationLevel v1_0.tmp#Validation_validatedBy v1_0.tmp#Validation
Type vr:Validation
Type hierarchy
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
validatedBy vr:IdentifierURI required 
The IVOA ID of the registry or organisation that
assigned the validation level.
Source
 
<xs:element name="validationLevel" type="vr:Validation" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>A numeric grade describing the quality of the capability description and interface, when applicable, to be used to indicate the confidence an end-user can put in the resource as part of a VO application or research study.</xs:documentation>
    <xs:documentation>See vr:ValidationLevel for an explanation of the allowed levels.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Capability / description
Namespace No namespace
Annotations
 
A human-readable description of what this capability 
provides as part of the over-all service
 
Use of this optional element is especially encouraged when
this capability is non-standard and is one of several 
capabilities listed.
Diagram
Diagram
Type xs:token
Properties
content: simple
minOccurs: 0
Source
 
<xs:element name="description" type="xs:token" minOccurs="0">
  <xs:annotation>
    <xs:documentation>A human-readable description of what this capability provides as part of the over-all service</xs:documentation>
    <xs:documentation>Use of this optional element is especially encouraged when this capability is non-standard and is one of several capabilities listed.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Capability / interface
Namespace No namespace
Annotations
 
a description of how to call the service to access
this capability
 
Since the Interface type is abstract, one must describe
the interface using a subclass of Interface, denoting
it via xsi:type.
 
Multiple occurances can describe different interfaces to 
the logically same capability--i.e. data or functionality.
That is, the inputs accepted and the output provides should
be logically the same.  For example, a WebBrowser interface
given in addition to a WebService interface would simply 
provide an interactive, human-targeted interface to the 
underlying WebService interface.
Diagram
Diagram v1_0.tmp#Interface_version v1_0.tmp#Interface_role v1_0.tmp#Interface_accessURL v1_0.tmp#Interface_securityMethod v1_0.tmp#Interface
Type vr:Interface
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Model accessURL+ , securityMethod*
Children accessURL, securityMethod
Instance
 
<interface role="" version="1.0">
  <accessURL use="">{1,unbounded}</accessURL>
  <securityMethod standardID="">{0,unbounded}</securityMethod>
</interface>
Attributes
QName Type Fixed Default Use Annotation
role xs:NMTOKEN optional 
A tag name the identifies the role the interface plays
in the particular capability.  If the value is equal to
"std" or begins with "std:", then the interface refers
to a standard interface defined by the standard
referred to by the capability's standardID attribute.
 
For an interface complying with some registered
standard (i.e. has a legal standardID), the role can be
match against interface roles enumerated in standard 
resource record.  The interface descriptions in
the standard record can provide default descriptions 
so that such details need not be repeated here.
version xs:string 1.0 optional 
The version of a standard interface specification that this 
interface complies with.  When the interface is
provided in the context of a Capability element, then
the standard being refered to is the one identified by
the Capability's standardID element.  If the standardID
is not provided, the meaning of this attribute is
undefined.
Source
 
<xs:element name="interface" type="vr:Interface" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>a description of how to call the service to access this capability</xs:documentation>
    <xs:documentation>Since the Interface type is abstract, one must describe the interface using a subclass of Interface, denoting it via xsi:type.</xs:documentation>
    <xs:documentation>Multiple occurances can describe different interfaces to the logically same capability--i.e. data or functionality. That is, the inputs accepted and the output provides should be logically the same. For example, a WebBrowser interface given in addition to a WebService interface would simply provide an interactive, human-targeted interface to the underlying WebService interface.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Interface / accessURL
Namespace No namespace
Annotations
 
The URL (or base URL) that a client uses to access the
service.  How this URL is to be interpreted and used 
depends on the specific Interface subclass
 
When more than one URL is given, each represents an
alternative (i.e. mirror) endpoint whose behavior is
identical to all the other accessURLs listed.
 
Editor's note: this element assumes that
all registered services are inherently web based.
Diagram
Diagram
Type vr:AccessURL
Properties
content: complex
minOccurs: 1
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
use restriction of xs:NMTOKEN optional 
A flag indicating whether this should be interpreted as a base
URL, a full URL, or a URL to a directory that will produce a 
listing of files.
 
The default value assumed when one is not given depends on the 
context.
Source
 
<xs:element name="accessURL" type="vr:AccessURL" minOccurs="1" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>The URL (or base URL) that a client uses to access the service. How this URL is to be interpreted and used depends on the specific Interface subclass</xs:documentation>
    <xs:documentation>When more than one URL is given, each represents an alternative (i.e. mirror) endpoint whose behavior is identical to all the other accessURLs listed.</xs:documentation>
    <xs:documentation>Editor's note: this element assumes that all registered services are inherently web based.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Interface / securityMethod
Namespace No namespace
Annotations
 
the mechanism the client must employ to gain secure
access to the service.
 
when more than one method is listed, each one must
be employed to gain access.
Diagram
Diagram v1_0.tmp#SecurityMethod_standardID v1_0.tmp#SecurityMethod
Type vr:SecurityMethod
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Model
Attributes
QName Type Fixed Default Use Annotation
standardID xs:anyURI optional 
A URI identifier for a standard security mechanism.
 
This provides a unique way to refer to a security
specification standard.  The use of an IVOA identifier here 
implies that a VOResource description of the standard is 
registered and accessible.
Source
 
<xs:element name="securityMethod" type="vr:SecurityMethod" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>the mechanism the client must employ to gain secure access to the service.</xs:documentation>
    <xs:documentation>when more than one method is listed, each one must be employed to gain access.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Organisation / facility
Namespace No namespace
Annotations
 
the observatory or facility used to collect the data 
contained or managed by this resource.
Diagram
Diagram
Type vr:ResourceName
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
ivo-id vr:IdentifierURI optional 
The URI form of the IVOA identifier for the resource refered to
Source
 
<xs:element name="facility" type="vr:ResourceName" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Subject</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>the observatory or facility used to collect the data contained or managed by this resource.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:Organisation / instrument
Namespace No namespace
Annotations
 
the Instrument used to collect the data contain or 
managed by a resource.
Diagram
Diagram
Type vr:ResourceName
Properties
content: complex
minOccurs: 0
maxOccurs: unbounded
Attributes
QName Type Fixed Default Use Annotation
ivo-id vr:IdentifierURI optional 
The URI form of the IVOA identifier for the resource refered to
Source
 
<xs:element name="instrument" type="vr:ResourceName" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:appinfo>
      <vm:dcterm>Subject</vm:dcterm>
      <vm:dcterm>Subject.Instrument</vm:dcterm>
    </xs:appinfo>
    <xs:documentation>the Instrument used to collect the data contain or managed by a resource.</xs:documentation>
  </xs:annotation>
</xs:element>
Element vr:WebService / wsdlURL
Namespace No namespace
Annotations
 
The location of the WSDL that describes this
Web Service.  If not provided, the location is 
assumed to be the accessURL with "?wsdl" appended.
 
Multiple occurances should represent mirror copies of 
the same WSDL file.
Diagram
Diagram
Type xs:anyURI
Properties
content: simple
minOccurs: 0
maxOccurs: unbounded
Source
 
<xs:element name="wsdlURL" type="xs:anyURI" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>The location of the WSDL that describes this Web Service. If not provided, the location is assumed to be the accessURL with "?wsdl" appended.</xs:documentation>
    <xs:documentation>Multiple occurances should represent mirror copies of the same WSDL file.</xs:documentation>
  </xs:annotation>
</xs:element>
Complex Type vr:Resource
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
Any entity or component of a VO application that is
describable and identifiable by a IVOA Identifier.
Diagram
Diagram v1_0.tmp#Resource_created v1_0.tmp#Resource_updated v1_0.tmp#Resource_status v1_0.tmp#Resource_validationLevel v1_0.tmp#Resource_title v1_0.tmp#Resource_shortName v1_0.tmp#Resource_identifier v1_0.tmp#Resource_curation v1_0.tmp#Resource_content
Used by
Model validationLevel* , title , shortName{0,1} , identifier , curation , content
Children content, curation, identifier, shortName, title, validationLevel
Attributes
QName Type Fixed Default Use Annotation
created xs:dateTime required 
The UTC date and time this resource metadata description
was created.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
status restriction of xs:string required 
a tag indicating whether this resource is believed to be still
actively maintained.
updated xs:dateTime required 
The UTC date this resource metadata description was last updated.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
Source
 
<xs:complexType name="Resource">
  <xs:annotation>
    <xs:documentation>Any entity or component of a VO application that is describable and identifiable by a IVOA Identifier.</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="validationLevel" type="vr:Validation" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>A numeric grade describing the quality of the resource description, when applicable, to be used to indicate the confidence an end-user can put in the resource as part of a VO application or research study.</xs:documentation>
        <xs:documentation>See vr:ValidationLevel for an explanation of the allowed levels.</xs:documentation>
        <xs:documentation>Note that when this resource is a Service, this grade applies to the core set of metadata. Capability and interface metadata, as well as the compliance of the service with the interface standard, is rated by validationLevel tag in the capability element (see the vr:Service complex type).</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="title" type="xs:token">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Title</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>the full name given to the resource</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="shortName" type="vr:ShortName" minOccurs="0">
      <xs:annotation>
        <xs:documentation>a short name or abbreviation given to the resource.</xs:documentation>
        <xs:documentation>This name will be used where brief annotations for the resource name are required. Applications may use to refer to this resource in a compact display.</xs:documentation>
        <xs:documentation>One word or a few letters is recommended. No more than sixteen characters are allowed.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="identifier" type="vr:IdentifierURI">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Identifier</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>Unambiguous reference to the resource conforming to the IVOA standard for identifiers</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="curation" type="vr:Curation">
      <xs:annotation>
        <xs:documentation>Information regarding the general curation of the resource</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="content" type="vr:Content">
      <xs:annotation>
        <xs:documentation>Information regarding the general content of the resource</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
  <xs:attribute name="created" type="xs:dateTime" use="required">
    <xs:annotation>
      <xs:documentation>The UTC date and time this resource metadata description was created.</xs:documentation>
      <xs:documentation>This timestamp must not be in the future. This time is not required to be accurate; it should be at least accurate to the day. Any insignificant time fields should be set to zero.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
  <xs:attribute name="updated" type="xs:dateTime" use="required">
    <xs:annotation>
      <xs:documentation>The UTC date this resource metadata description was last updated.</xs:documentation>
      <xs:documentation>This timestamp must not be in the future. This time is not required to be accurate; it should be at least accurate to the day. Any insignificant time fields should be set to zero.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
  <xs:attribute name="status" use="required">
    <xs:annotation>
      <xs:documentation>a tag indicating whether this resource is believed to be still actively maintained.</xs:documentation>
    </xs:annotation>
    <xs:simpleType>
      <xs:restriction base="xs:string">
        <xs:enumeration value="active">
          <xs:annotation>
            <xs:documentation>resource is believed to be currently maintained, and its description is up to date (default).</xs:documentation>
          </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="inactive">
          <xs:annotation>
            <xs:documentation>resource is apparently not being maintained at the present.</xs:documentation>
          </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="deleted">
          <xs:annotation>
            <xs:documentation>resource publisher has explicitly deleted the resource.</xs:documentation>
          </xs:annotation>
        </xs:enumeration>
      </xs:restriction>
    </xs:simpleType>
  </xs:attribute>
</xs:complexType>
Complex Type vr:Validation
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
a validation stamp combining a validation level and the ID of 
the validator.
Diagram
Diagram v1_0.tmp#ValidationLevel v1_0.tmp#Validation_validatedBy
Type extension of vr:ValidationLevel
Type hierarchy
Used by
Attributes
QName Type Fixed Default Use Annotation
validatedBy vr:IdentifierURI required 
The IVOA ID of the registry or organisation that
assigned the validation level.
Source
 
<xs:complexType name="Validation">
  <xs:annotation>
    <xs:documentation>a validation stamp combining a validation level and the ID of the validator.</xs:documentation>
  </xs:annotation>
  <xs:simpleContent>
    <xs:extension base="vr:ValidationLevel">
      <xs:attribute name="validatedBy" type="vr:IdentifierURI" use="required">
        <xs:annotation>
          <xs:documentation>The IVOA ID of the registry or organisation that assigned the validation level.</xs:documentation>
        </xs:annotation>
      </xs:attribute>
    </xs:extension>
  </xs:simpleContent>
</xs:complexType>
Simple Type vr:ValidationLevel
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
the allowed values for describing the resource descriptions
and interfaces.
 
See the RM (v1.1, section 4) for more guidance on the use of
these values.
Diagram
Diagram
Type restriction of xs:integer
Facets
whiteSpace collapse
enumeration 0 
The resource has a description that is stored in a
registry. This level does not imply a compliant
description.
enumeration 1 
In addition to meeting the level 0 definition, the
resource description conforms syntactically to this
standard and to the encoding scheme used.
enumeration 2 
In addition to meeting the level 1 definition, the
resource description refers to an existing resource that
has demonstrated to be functionally compliant.
enumeration 3 
In addition to meeting the level 2 definition, the
resource description has been inspected by a human and
judged to comply semantically to this standard as well
as meeting any additional minimum quality criteria (e.g.,
providing values for important but non-required
metadata) set by the human inspector.
enumeration 4 
In addition to meeting the level 3 definition, the
resource description meets additional quality criteria
set by the human inspector and is therefore considered
an excellent description of the resource. Consequently,
the resource is expected to be operate well as part of a
VO application or research study.
Used by
Complex Type vr:Validation
Source
 
<xs:simpleType name="ValidationLevel">
  <xs:annotation>
    <xs:documentation>the allowed values for describing the resource descriptions and interfaces.</xs:documentation>
    <xs:documentation>See the RM (v1.1, section 4) for more guidance on the use of these values.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:integer">
    <xs:whiteSpace value="collapse"/>
    <xs:enumeration value="0">
      <xs:annotation>
        <xs:documentation>The resource has a description that is stored in a registry. This level does not imply a compliant description.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="1">
      <xs:annotation>
        <xs:documentation>In addition to meeting the level 0 definition, the resource description conforms syntactically to this standard and to the encoding scheme used.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="2">
      <xs:annotation>
        <xs:documentation>In addition to meeting the level 1 definition, the resource description refers to an existing resource that has demonstrated to be functionally compliant.</xs:documentation>
        <xs:documentation>When the resource is a service, it is consider to exist and functionally compliant if use of the service accessURL responds without error when used as intended by the resource. If the service is a standard one, it must also demonstrate the response is syntactically compliant with the service standard in order to be considered functionally compliant. If the resource is not a service, then the ReferenceURL must be shown to return a document without error.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="3">
      <xs:annotation>
        <xs:documentation>In addition to meeting the level 2 definition, the resource description has been inspected by a human and judged to comply semantically to this standard as well as meeting any additional minimum quality criteria (e.g., providing values for important but non-required metadata) set by the human inspector.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="4">
      <xs:annotation>
        <xs:documentation>In addition to meeting the level 3 definition, the resource description meets additional quality criteria set by the human inspector and is therefore considered an excellent description of the resource. Consequently, the resource is expected to be operate well as part of a VO application or research study.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>
Simple Type vr:ShortName
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
a short name or abbreviation given to something.
 
This name will be used where brief annotations for
the resource name are required.  Applications may 
use to refer to this resource in a compact display.
 
One word or a few letters is recommended.  No more
than sixteen characters are allowed.
Diagram
Diagram
Type restriction of xs:token
Facets
maxLength 16
Used by
Source
 
<xs:simpleType name="ShortName">
  <xs:annotation>
    <xs:documentation>a short name or abbreviation given to something.</xs:documentation>
    <xs:documentation>This name will be used where brief annotations for the resource name are required. Applications may use to refer to this resource in a compact display.</xs:documentation>
    <xs:documentation>One word or a few letters is recommended. No more than sixteen characters are allowed.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:token">
    <xs:maxLength value="16"/>
  </xs:restriction>
</xs:simpleType>
Complex Type vr:Curation
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
Information regarding the general curation of a resource
Diagram
Diagram v1_0.tmp#Curation_publisher v1_0.tmp#Curation_creator v1_0.tmp#Curation_contributor v1_0.tmp#Curation_date v1_0.tmp#Curation_version v1_0.tmp#Curation_contact
Used by
Model publisher , creator* , contributor* , date* , version{0,1} , contact+
Children contact, contributor, creator, date, publisher, version
Source
 
<xs:complexType name="Curation">
  <xs:annotation>
    <xs:documentation>Information regarding the general curation of a resource</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="publisher" type="vr:ResourceName">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Publisher</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>Entity (e.g. person or organisation) responsible for making the resource available</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="creator" type="vr:Creator" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Creator</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>The entity (e.g. person or organisation) primarily responsible for creating the content or constitution of the resource.</xs:documentation>
        <xs:documentation>A logo need only be provided for the first occurance. When multiple logos are supplied via multiple creator elements, the application is free to choose which to use.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="contributor" type="vr:ResourceName" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Contributor</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>Entity responsible for contributions to the content of the resource</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="date" type="vr:Date" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Date</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>Date associated with an event in the life cycle of the resource.</xs:documentation>
        <xs:documentation>This will typically be associated with the creation or availability (i.e., most recent release or version) of the resource. Use the role attribute to clarify.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="version" type="xs:token" minOccurs="0">
      <xs:annotation>
        <xs:documentation>Label associated with creation or availablilty of a version of a resource.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="contact" type="vr:Contact" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>Information that can be used for contacting someone with regard to this resource.</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:complexType>
Complex Type vr:Creator
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
The entity (e.g. person or organisation) primarily responsible 
for creating something
Diagram
Diagram v1_0.tmp#Creator_name v1_0.tmp#Creator_logo
Used by
Model name , logo{0,1}
Children logo, name
Source
 
<xs:complexType name="Creator">
  <xs:annotation>
    <xs:documentation>The entity (e.g. person or organisation) primarily responsible for creating something</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="name" type="vr:ResourceName">
      <xs:annotation>
        <xs:documentation>the name or title of the creating person or organization</xs:documentation>
        <xs:documentation>Users of the creation should use this name in subsequent credits and acknowledgements.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="logo" type="xs:anyURI" minOccurs="0">
      <xs:annotation>
        <xs:documentation>URL pointing to a graphical logo, which may be used to help identify the information source</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:complexType>
Complex Type vr:Date
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Diagram
Diagram v1_0.tmp#UTCDateTime v1_0.tmp#Date_role
Type extension of vr:UTCDateTime
Type hierarchy
Used by
Attributes
QName Type Fixed Default Use Annotation
role xs:string representative optional 
A string indicating what the date refers to.
 
While this vocabulary is uncontrolled, recognized strings 
include "creation", indicating the date that the resource 
itself was created, and "update", indicating when the
resource was updated last.  The default value, 
"representative", means that the date is a rough 
representation of the time coverage of the resource.
 
Note that this date refers to the resource; dates describing
the metadata description of the resource are handled by
the "created" and "updated" attributes of the Resource 
element.
Source
 
<xs:complexType name="Date">
  <xs:simpleContent>
    <xs:extension base="vr:UTCDateTime">
      <xs:attribute name="role" type="xs:string" default="representative">
        <xs:annotation>
          <xs:documentation>A string indicating what the date refers to.</xs:documentation>
          <xs:documentation>While this vocabulary is uncontrolled, recognized strings include "creation", indicating the date that the resource itself was created, and "update", indicating when the resource was updated last. The default value, "representative", means that the date is a rough representation of the time coverage of the resource.</xs:documentation>
          <xs:documentation>Note that this date refers to the resource; dates describing the metadata description of the resource are handled by the "created" and "updated" attributes of the Resource element.</xs:documentation>
        </xs:annotation>
      </xs:attribute>
    </xs:extension>
  </xs:simpleContent>
</xs:complexType>
Simple Type vr:UTCDateTime
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
A date stamp that can be given to a precision of either a
day (type xs:date) or seconds (type
xs:dateTime)
Diagram
Diagram v1_0.tmp#UTCTimestamp
Type union of(xs:date, vr:UTCTimestamp)
Used by
Complex Type vr:Date
Source
 
<xs:simpleType name="UTCDateTime">
  <xs:annotation>
    <xs:documentation>A date stamp that can be given to a precision of either a day (type xs:date) or seconds (type xs:dateTime)</xs:documentation>
  </xs:annotation>
  <xs:union memberTypes="xs:date vr:UTCTimestamp"/>
</xs:simpleType>
Complex Type vr:Contact
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
Information that can be used for contacting someone
Diagram
Diagram v1_0.tmp#Contact_name v1_0.tmp#Contact_address v1_0.tmp#Contact_email v1_0.tmp#Contact_telephone
Used by
Model name , address{0,1} , email{0,1} , telephone{0,1}
Children address, email, name, telephone
Source
 
<xs:complexType name="Contact">
  <xs:annotation>
    <xs:documentation>Information that can be used for contacting someone</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="name" type="vr:ResourceName">
      <xs:annotation>
        <xs:documentation>the name or title of the contact person.</xs:documentation>
        <xs:documentation>This can be a person's name, e.g. "John P. Jones" or a group, "Archive Support Team".</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="address" type="xs:token" minOccurs="0">
      <xs:annotation>
        <xs:documentation>the contact mailing address</xs:documentation>
        <xs:documentation>All components of the mailing address are given in one string, e.g. "3700 San Martin Drive, Baltimore, MD 21218 USA".</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="email" type="xs:token" minOccurs="0">
      <xs:annotation>
        <xs:documentation>the contact email address</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="telephone" type="xs:token" minOccurs="0">
      <xs:annotation>
        <xs:documentation>the contact telephone number</xs:documentation>
        <xs:documentation>Complete international dialing codes should be given, e.g. "+1-410-338-1234".</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:complexType>
Complex Type vr:Content
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
Information regarding the general content of a resource
Diagram
Diagram v1_0.tmp#Content_subject v1_0.tmp#Content_description v1_0.tmp#Content_source v1_0.tmp#Content_referenceURL v1_0.tmp#Content_type v1_0.tmp#Content_contentLevel v1_0.tmp#Content_relationship
Used by
Element vr:Resource/content
Model subject+ , description , source{0,1} , referenceURL , type* , contentLevel* , relationship*
Children contentLevel, description, referenceURL, relationship, source, subject, type
Source
 
<xs:complexType name="Content">
  <xs:annotation>
    <xs:documentation>Information regarding the general content of a resource</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="subject" type="xs:token" maxOccurs="unbounded">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Subject</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>a topic, object type, or other descriptive keywords about the resource.</xs:documentation>
        <xs:documentation>Terms for Subject should be drawn from the IAU Astronomy Thesaurus (http://msowww.anu.edu.au/library/thesaurus/).</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="description" type="xs:token">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Description</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>An account of the nature of the resource</xs:documentation>
        <xs:documentation>The description may include but is not limited to an abstract, table of contents, reference to a graphical representation of content or a free-text account of the content.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="source" type="vr:Source" minOccurs="0">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Source</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>a bibliographic reference from which the present resource is derived or extracted.</xs:documentation>
        <xs:documentation>This is intended to point to an article in the published literature. An ADS Bibcode is recommended as a value when available.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="referenceURL" type="xs:anyURI">
      <xs:annotation>
        <xs:documentation>URL pointing to a human-readable document describing this resource.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="type" type="vr:Type" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Type</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>Nature or genre of the content of the resource</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="contentLevel" type="vr:ContentLevel" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:appinfo>
          <vm:dcterm>Subject</vm:dcterm>
          <vm:dcterm>Subject.ContentLevel</vm:dcterm>
        </xs:appinfo>
        <xs:documentation>Description of the content level or intended audience</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="relationship" type="vr:Relationship" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>a description of a relationship to another resource.</xs:documentation>
        <xs:documentation>Because this element's type is abstract, an xsi:type must be to indicate the set of relationship types that are valid.</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:complexType>
Simple Type vr:Type
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Diagram
Diagram
Type restriction of xs:token
Facets
enumeration Other 
resource that does not fall into any of the category names
currently defined.
enumeration Archive 
Collection of pointed observations
enumeration Bibliography 
Collection of bibliographic reference, abstracts, and 
publications
enumeration Catalog 
Collection of derived data, primarily in tabular form
enumeration Journal 
Collection of scholarly publications under common editorial 
policy
enumeration Library 
Collection of published materials (journals, books, etc.)
enumeration Simulation 
Theoretical simulation or model
enumeration Survey 
Collection of observations covering substantial and
contiguous areas of the sky
enumeration Transformation 
A service that transforms data
enumeration Education 
Collection of materials appropriate for educational use, such
as teaching resources, curricula, etc.
enumeration Outreach 
Collection of materials appropriate for public outreach, such
as press releases and photo galleries
enumeration EPOResource 
Collection of materials that may be suitable for EPO
products but which are not in final product form, as in Type 
Outreach or Type Education.  EPOResource would apply,
e.g., to archives with easily accessed preview images or to
surveys with easy-to-use images.
enumeration Animation 
Animation clips of astronomical phenomena
enumeration Artwork 
Artists' renderings of astronomical phenomena or objects
enumeration Background 
Background information on astronomical phenomena or objects
enumeration BasicData 
Compilations of basic astronomical facts about objects,
such as approximate distance or membership in constellation.
enumeration Historical 
Historical information about astronomical objects
enumeration Photographic 
Publication-quality photographs of astronomical objects
enumeration Press 
Press releases about astronomical objects
enumeration Organisation 
An organization that is a publisher or curator of other 
resources.
enumeration Project 
A project that is a publisher or curator of other resources
enumeration Registry 
a query service for which response is a structured
description of resources.
Used by
Element vr:Content/type
Source
 
<xs:simpleType name="Type">
  <xs:restriction base="xs:token">
    <xs:enumeration value="Other">
      <xs:annotation>
        <xs:documentation>resource that does not fall into any of the category names currently defined.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Archive">
      <xs:annotation>
        <xs:documentation>Collection of pointed observations</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Bibliography">
      <xs:annotation>
        <xs:documentation>Collection of bibliographic reference, abstracts, and publications</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Catalog">
      <xs:annotation>
        <xs:documentation>Collection of derived data, primarily in tabular form</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Journal">
      <xs:annotation>
        <xs:documentation>Collection of scholarly publications under common editorial policy</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Library">
      <xs:annotation>
        <xs:documentation>Collection of published materials (journals, books, etc.)</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Simulation">
      <xs:annotation>
        <xs:documentation>Theoretical simulation or model</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Survey">
      <xs:annotation>
        <xs:documentation>Collection of observations covering substantial and contiguous areas of the sky</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Transformation">
      <xs:annotation>
        <xs:documentation>A service that transforms data</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Education">
      <xs:annotation>
        <xs:documentation>Collection of materials appropriate for educational use, such as teaching resources, curricula, etc.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Outreach">
      <xs:annotation>
        <xs:documentation>Collection of materials appropriate for public outreach, such as press releases and photo galleries</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="EPOResource">
      <xs:annotation>
        <xs:documentation>Collection of materials that may be suitable for EPO products but which are not in final product form, as in Type Outreach or Type Education. EPOResource would apply, e.g., to archives with easily accessed preview images or to surveys with easy-to-use images.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Animation">
      <xs:annotation>
        <xs:documentation>Animation clips of astronomical phenomena</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Artwork">
      <xs:annotation>
        <xs:documentation>Artists' renderings of astronomical phenomena or objects</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Background">
      <xs:annotation>
        <xs:documentation>Background information on astronomical phenomena or objects</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="BasicData">
      <xs:annotation>
        <xs:documentation>Compilations of basic astronomical facts about objects, such as approximate distance or membership in constellation.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Historical">
      <xs:annotation>
        <xs:documentation>Historical information about astronomical objects</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Photographic">
      <xs:annotation>
        <xs:documentation>Publication-quality photographs of astronomical objects</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Press">
      <xs:annotation>
        <xs:documentation>Press releases about astronomical objects</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Organisation">
      <xs:annotation>
        <xs:documentation>An organization that is a publisher or curator of other resources.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Project">
      <xs:annotation>
        <xs:documentation>A project that is a publisher or curator of other resources</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Registry">
      <xs:annotation>
        <xs:documentation>a query service for which response is a structured description of resources.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>
Simple Type vr:ContentLevel
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Diagram
Diagram
Type restriction of xs:token
Facets
enumeration General 
Resource provides information appropriate for all users
enumeration Elementary Education 
Resource provides information appropriate for use in elementary
education (e.g. approximate ages 6-11)
enumeration Middle School Education 
Resource provides information appropriate for use in middle
school education (e.g. approximate ages 11-14)
enumeration Secondary Education 
Resource provides information appropriate for use in elementary
education (e.g. approximate ages 14-18)
enumeration Community College 
Resource provides information appropriate for use in 
community/junior college or early university education.
enumeration University 
Resource provides information appropriate for use in
university education
enumeration Research 
Resource provides information appropriate for
supporting scientific research.
enumeration Amateur 
Resource provides information of interest to
amateur astronomers.
enumeration Informal Education 
Resource provides information appropriate for education
at museums, planetariums, and other centers of informal learning.
Used by
Source
 
<xs:simpleType name="ContentLevel">
  <xs:restriction base="xs:token">
    <xs:enumeration value="General">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for all users</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Elementary Education">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for use in elementary education (e.g. approximate ages 6-11)</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Middle School Education">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for use in middle school education (e.g. approximate ages 11-14)</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Secondary Education">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for use in elementary education (e.g. approximate ages 14-18)</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Community College">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for use in community/junior college or early university education.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="University">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for use in university education</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Research">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for supporting scientific research.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Amateur">
      <xs:annotation>
        <xs:documentation>Resource provides information of interest to amateur astronomers.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Informal Education">
      <xs:annotation>
        <xs:documentation>Resource provides information appropriate for education at museums, planetariums, and other centers of informal learning.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>
Complex Type vr:Relationship
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
A description of the relationship between one resource and one or
more other resources.
Diagram
Diagram v1_0.tmp#Relationship_relationshipType v1_0.tmp#Relationship_relatedResource
Used by
Model relationshipType , relatedResource+
Children relatedResource, relationshipType
Source
 
<xs:complexType name="Relationship">
  <xs:annotation>
    <xs:documentation>A description of the relationship between one resource and one or more other resources.</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="relationshipType" type="xs:token">
      <xs:annotation>
        <xs:documentation>the named type of relationship</xs:documentation>
        <xs:documentation>The VOResource Core specification defines a standard set of names that are not enforced by this schema, but are otherwise required by the spec.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="relatedResource" type="vr:ResourceName" minOccurs="1" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>the name of resource that this resource is related to.</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:complexType>
Simple Type vr:Rights
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Diagram
Diagram
Type restriction of xs:token
Facets
enumeration public 
unrestricted, public access is allowed without 
authentication.
enumeration secure 
authenticated, public access is allowed.
enumeration proprietary 
only proprietary access is allowed with authentication.
Used by
Source
 
<xs:simpleType name="Rights">
  <xs:restriction base="xs:token">
    <xs:enumeration value="public">
      <xs:annotation>
        <xs:documentation>unrestricted, public access is allowed without authentication.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="secure">
      <xs:annotation>
        <xs:documentation>authenticated, public access is allowed.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="proprietary">
      <xs:annotation>
        <xs:documentation>only proprietary access is allowed with authentication.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>
Complex Type vr:Service
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
a resource that can be invoked by a client to perform some action
on its behalf.
Diagram
Diagram v1_0.tmp#Resource_created v1_0.tmp#Resource_updated v1_0.tmp#Resource_status v1_0.tmp#Resource_validationLevel v1_0.tmp#Resource_title v1_0.tmp#Resource_shortName v1_0.tmp#Resource_identifier v1_0.tmp#Resource_curation v1_0.tmp#Resource_content v1_0.tmp#Resource v1_0.tmp#Service_rights v1_0.tmp#Service_capability
Type extension of vr:Resource
Type hierarchy
Used by
Complex Type vs:DataService
Model validationLevel* , title , shortName{0,1} , identifier , curation , content , rights* , capability*
Children capability, content, curation, identifier, rights, shortName, title, validationLevel
Attributes
QName Type Fixed Default Use Annotation
created xs:dateTime required 
The UTC date and time this resource metadata description
was created.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
status restriction of xs:string required 
a tag indicating whether this resource is believed to be still
actively maintained.
updated xs:dateTime required 
The UTC date this resource metadata description was last updated.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
Source
 
<xs:complexType name="Service">
  <xs:annotation>
    <xs:documentation>a resource that can be invoked by a client to perform some action on its behalf.</xs:documentation>
  </xs:annotation>
  <xs:complexContent>
    <xs:extension base="vr:Resource">
      <xs:sequence>
        <xs:element name="rights" type="vr:Rights" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:appinfo>
              <vm:dcterm>Rights</vm:dcterm>
            </xs:appinfo>
            <xs:documentation>Information about rights held in and over the resource.</xs:documentation>
            <xs:documentation>This should be repeated for all Rights values that apply.</xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element name="capability" type="vr:Capability" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:documentation>a description of a general capability of the service and how to use it.</xs:documentation>
            <xs:documentation>This describes a general function of the service, usually in terms of a standard service protocol (e.g. SIA), but not necessarily.</xs:documentation>
            <xs:documentation>A service can have many capabilities associated with it, each reflecting different aspects of the functionality it provides.</xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:sequence>
    </xs:extension>
  </xs:complexContent>
</xs:complexType>
Complex Type vr:Capability
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
a description of what the service does (in terms of 
context-specific behavior), and how to use it (in terms of
an interface)
Diagram
Diagram v1_0.tmp#Capability_standardID v1_0.tmp#Capability_validationLevel v1_0.tmp#Capability_description v1_0.tmp#Capability_interface
Used by
Model validationLevel* , description{0,1} , interface*
Children description, interface, validationLevel
Attributes
QName Type Fixed Default Use Annotation
standardID xs:anyURI optional 
A URI identifier for a standard service.
 
This provides a unique way to refer to a service
specification standard, such as a Simple Image Access service.
The use of an IVOA identifier here implies that a
VOResource description of the standard is registered and 
accessible.
Source
 
<xs:complexType name="Capability">
  <xs:annotation>
    <xs:documentation>a description of what the service does (in terms of context-specific behavior), and how to use it (in terms of an interface)</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="validationLevel" type="vr:Validation" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>A numeric grade describing the quality of the capability description and interface, when applicable, to be used to indicate the confidence an end-user can put in the resource as part of a VO application or research study.</xs:documentation>
        <xs:documentation>See vr:ValidationLevel for an explanation of the allowed levels.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="description" type="xs:token" minOccurs="0">
      <xs:annotation>
        <xs:documentation>A human-readable description of what this capability provides as part of the over-all service</xs:documentation>
        <xs:documentation>Use of this optional element is especially encouraged when this capability is non-standard and is one of several capabilities listed.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="interface" type="vr:Interface" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>a description of how to call the service to access this capability</xs:documentation>
        <xs:documentation>Since the Interface type is abstract, one must describe the interface using a subclass of Interface, denoting it via xsi:type.</xs:documentation>
        <xs:documentation>Multiple occurances can describe different interfaces to the logically same capability--i.e. data or functionality. That is, the inputs accepted and the output provides should be logically the same. For example, a WebBrowser interface given in addition to a WebService interface would simply provide an interactive, human-targeted interface to the underlying WebService interface.</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
  <xs:attribute name="standardID" type="xs:anyURI">
    <xs:annotation>
      <xs:documentation>A URI identifier for a standard service.</xs:documentation>
      <xs:documentation>This provides a unique way to refer to a service specification standard, such as a Simple Image Access service. The use of an IVOA identifier here implies that a VOResource description of the standard is registered and accessible.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
</xs:complexType>
Complex Type vr:Interface
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
A description of a service interface.
 
Since this type is abstract, one must use an Interface subclass
to describe an actual interface.
 
Additional interface subtypes (beyond WebService and WebBrowser) are 
defined in the VODataService schema.
Diagram
Diagram v1_0.tmp#Interface_version v1_0.tmp#Interface_role v1_0.tmp#Interface_accessURL v1_0.tmp#Interface_securityMethod
Properties
abstract: true
Used by
Model accessURL+ , securityMethod*
Children accessURL, securityMethod
Attributes
QName Type Fixed Default Use Annotation
role xs:NMTOKEN optional 
A tag name the identifies the role the interface plays
in the particular capability.  If the value is equal to
"std" or begins with "std:", then the interface refers
to a standard interface defined by the standard
referred to by the capability's standardID attribute.
 
For an interface complying with some registered
standard (i.e. has a legal standardID), the role can be
match against interface roles enumerated in standard 
resource record.  The interface descriptions in
the standard record can provide default descriptions 
so that such details need not be repeated here.
version xs:string 1.0 optional 
The version of a standard interface specification that this 
interface complies with.  When the interface is
provided in the context of a Capability element, then
the standard being refered to is the one identified by
the Capability's standardID element.  If the standardID
is not provided, the meaning of this attribute is
undefined.
Source
 
<xs:complexType name="Interface" abstract="true">
  <xs:annotation>
    <xs:documentation>A description of a service interface.</xs:documentation>
    <xs:documentation>Since this type is abstract, one must use an Interface subclass to describe an actual interface.</xs:documentation>
    <xs:documentation>Additional interface subtypes (beyond WebService and WebBrowser) are defined in the VODataService schema.</xs:documentation>
  </xs:annotation>
  <xs:sequence>
    <xs:element name="accessURL" type="vr:AccessURL" minOccurs="1" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>The URL (or base URL) that a client uses to access the service. How this URL is to be interpreted and used depends on the specific Interface subclass</xs:documentation>
        <xs:documentation>When more than one URL is given, each represents an alternative (i.e. mirror) endpoint whose behavior is identical to all the other accessURLs listed.</xs:documentation>
        <xs:documentation>Editor's note: this element assumes that all registered services are inherently web based.</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="securityMethod" type="vr:SecurityMethod" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>the mechanism the client must employ to gain secure access to the service.</xs:documentation>
        <xs:documentation>when more than one method is listed, each one must be employed to gain access.</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
  <xs:attribute name="version" type="xs:string" default="1.0">
    <xs:annotation>
      <xs:documentation>The version of a standard interface specification that this interface complies with. When the interface is provided in the context of a Capability element, then the standard being refered to is the one identified by the Capability's standardID element. If the standardID is not provided, the meaning of this attribute is undefined.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
  <xs:attribute name="role" type="xs:NMTOKEN">
    <xs:annotation>
      <xs:documentation>A tag name the identifies the role the interface plays in the particular capability. If the value is equal to "std" or begins with "std:", then the interface refers to a standard interface defined by the standard referred to by the capability's standardID attribute.</xs:documentation>
      <xs:documentation>For an interface complying with some registered standard (i.e. has a legal standardID), the role can be match against interface roles enumerated in standard resource record. The interface descriptions in the standard record can provide default descriptions so that such details need not be repeated here.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
</xs:complexType>
Complex Type vr:SecurityMethod
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
a description of a security mechanism.
 
this type only allows one to refer to the mechanism via a
URI.  Derived types would allow for more metadata.
Diagram
Diagram v1_0.tmp#SecurityMethod_standardID
Used by
Model
Attributes
QName Type Fixed Default Use Annotation
standardID xs:anyURI optional 
A URI identifier for a standard security mechanism.
 
This provides a unique way to refer to a security
specification standard.  The use of an IVOA identifier here 
implies that a VOResource description of the standard is 
registered and accessible.
Source
 
<xs:complexType name="SecurityMethod">
  <xs:annotation>
    <xs:documentation>a description of a security mechanism.</xs:documentation>
    <xs:documentation>this type only allows one to refer to the mechanism via a URI. Derived types would allow for more metadata.</xs:documentation>
  </xs:annotation>
  <xs:sequence/>
  <xs:attribute name="standardID" type="xs:anyURI">
    <xs:annotation>
      <xs:documentation>A URI identifier for a standard security mechanism.</xs:documentation>
      <xs:documentation>This provides a unique way to refer to a security specification standard. The use of an IVOA identifier here implies that a VOResource description of the standard is registered and accessible.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
</xs:complexType>
Simple Type vr:UTCTimestamp
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
A timestamp that is compliant with ISO8601 but disallows
the use of a timezone indicator.
Diagram
Diagram
Type restriction of xs:dateTime
Facets
pattern \d{4}-\d\d-\d\dT\d\d:\d\d:\d\d(\.\d+)?
Source
 
<xs:simpleType name="UTCTimestamp">
  <xs:annotation>
    <xs:documentation>A timestamp that is compliant with ISO8601 but disallows the use of a timezone indicator.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:dateTime">
    <xs:pattern value="\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d(\.\d+)?"/>
  </xs:restriction>
</xs:simpleType>
Simple Type vr:AuthorityID
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Diagram
Diagram
Type restriction of xs:token
Facets
pattern [\w\d][\w\d\-_\.!~\*'\(\)\+=]{2,}
Source
 
<xs:simpleType name="AuthorityID">
  <xs:restriction base="xs:token">
    <xs:pattern value="[\w\d][\w\d\-_\.!~\*'\(\)\+=]{2,}"/>
  </xs:restriction>
</xs:simpleType>
Simple Type vr:ResourceKey
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Diagram
Diagram
Type restriction of xs:token
Facets
pattern [\w\d\-_\.!~\*'\(\)\+=]+(/[\w\d\-_\.!~\*'\(\)\+=]+)*
Source
 
<xs:simpleType name="ResourceKey">
  <xs:restriction base="xs:token">
    <xs:pattern value="[\w\d\-_\.!~\*'\(\)\+=]+(/[\w\d\-_\.!~\*'\(\)\+=]+)*"/>
  </xs:restriction>
</xs:simpleType>
Complex Type vr:Organisation
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
A named group of one or more persons brought together to pursue 
participation in VO applications.
 
According to the Resource Metadata Recommendation, organisations 
"can be hierarchical and range in size and scope.  At a high level, 
an organisation could be a university, observatory, or government
agency.  At a finer level, it could be a specific scientific 
project, mission, or individual researcher."
 
The main purpose of an organisation as a registered resource is 
to serve as a publisher of other resources.
Diagram
Diagram v1_0.tmp#Resource_created v1_0.tmp#Resource_updated v1_0.tmp#Resource_status v1_0.tmp#Resource_validationLevel v1_0.tmp#Resource_title v1_0.tmp#Resource_shortName v1_0.tmp#Resource_identifier v1_0.tmp#Resource_curation v1_0.tmp#Resource_content v1_0.tmp#Resource v1_0.tmp#Organisation_facility v1_0.tmp#Organisation_instrument
Type extension of vr:Resource
Type hierarchy
Model validationLevel* , title , shortName{0,1} , identifier , curation , content , facility* , instrument*
Children content, curation, facility, identifier, instrument, shortName, title, validationLevel
Attributes
QName Type Fixed Default Use Annotation
created xs:dateTime required 
The UTC date and time this resource metadata description
was created.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
status restriction of xs:string required 
a tag indicating whether this resource is believed to be still
actively maintained.
updated xs:dateTime required 
The UTC date this resource metadata description was last updated.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
Source
 
<xs:complexType name="Organisation">
  <xs:annotation>
    <xs:documentation>A named group of one or more persons brought together to pursue participation in VO applications.</xs:documentation>
    <xs:documentation>According to the Resource Metadata Recommendation, organisations "can be hierarchical and range in size and scope. At a high level, an organisation could be a university, observatory, or government agency. At a finer level, it could be a specific scientific project, mission, or individual researcher."</xs:documentation>
    <xs:documentation>The main purpose of an organisation as a registered resource is to serve as a publisher of other resources.</xs:documentation>
  </xs:annotation>
  <xs:complexContent>
    <xs:extension base="vr:Resource">
      <xs:sequence>
        <xs:element name="facility" type="vr:ResourceName" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:appinfo>
              <vm:dcterm>Subject</vm:dcterm>
            </xs:appinfo>
            <xs:documentation>the observatory or facility used to collect the data contained or managed by this resource.</xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element name="instrument" type="vr:ResourceName" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:appinfo>
              <vm:dcterm>Subject</vm:dcterm>
              <vm:dcterm>Subject.Instrument</vm:dcterm>
            </xs:appinfo>
            <xs:documentation>the Instrument used to collect the data contain or managed by a resource.</xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:sequence>
    </xs:extension>
  </xs:complexContent>
</xs:complexType>
Complex Type vr:WebBrowser
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
A (form-based) interface intended to be accesed interactively 
by a user via a web browser.
 
The accessURL represents the URL of the web form itself.
Diagram
Diagram v1_0.tmp#Interface_version v1_0.tmp#Interface_role v1_0.tmp#Interface_accessURL v1_0.tmp#Interface_securityMethod v1_0.tmp#Interface
Type extension of vr:Interface
Type hierarchy
Model accessURL+ , securityMethod*
Children accessURL, securityMethod
Attributes
QName Type Fixed Default Use Annotation
role xs:NMTOKEN optional 
A tag name the identifies the role the interface plays
in the particular capability.  If the value is equal to
"std" or begins with "std:", then the interface refers
to a standard interface defined by the standard
referred to by the capability's standardID attribute.
 
For an interface complying with some registered
standard (i.e. has a legal standardID), the role can be
match against interface roles enumerated in standard 
resource record.  The interface descriptions in
the standard record can provide default descriptions 
so that such details need not be repeated here.
version xs:string 1.0 optional 
The version of a standard interface specification that this 
interface complies with.  When the interface is
provided in the context of a Capability element, then
the standard being refered to is the one identified by
the Capability's standardID element.  If the standardID
is not provided, the meaning of this attribute is
undefined.
Source
 
<xs:complexType name="WebBrowser">
  <xs:annotation>
    <xs:documentation>A (form-based) interface intended to be accesed interactively by a user via a web browser.</xs:documentation>
    <xs:documentation>The accessURL represents the URL of the web form itself.</xs:documentation>
  </xs:annotation>
  <xs:complexContent>
    <xs:extension base="vr:Interface">
      <xs:sequence/>
    </xs:extension>
  </xs:complexContent>
</xs:complexType>
Complex Type vr:WebService
Namespace http://www.ivoa.net/xml/VOResource/v1.0
Annotations
 
A Web Service that is describable by a WSDL document.
 
The accessURL element gives the Web Service's endpoint URL.
Diagram
Diagram v1_0.tmp#Interface_version v1_0.tmp#Interface_role v1_0.tmp#Interface_accessURL v1_0.tmp#Interface_securityMethod v1_0.tmp#Interface v1_0.tmp#WebService_wsdlURL
Type extension of vr:Interface
Type hierarchy
Model accessURL+ , securityMethod* , wsdlURL*
Children accessURL, securityMethod, wsdlURL
Attributes
QName Type Fixed Default Use Annotation
role xs:NMTOKEN optional 
A tag name the identifies the role the interface plays
in the particular capability.  If the value is equal to
"std" or begins with "std:", then the interface refers
to a standard interface defined by the standard
referred to by the capability's standardID attribute.
 
For an interface complying with some registered
standard (i.e. has a legal standardID), the role can be
match against interface roles enumerated in standard 
resource record.  The interface descriptions in
the standard record can provide default descriptions 
so that such details need not be repeated here.
version xs:string 1.0 optional 
The version of a standard interface specification that this 
interface complies with.  When the interface is
provided in the context of a Capability element, then
the standard being refered to is the one identified by
the Capability's standardID element.  If the standardID
is not provided, the meaning of this attribute is
undefined.
Source
 
<xs:complexType name="WebService">
  <xs:annotation>
    <xs:documentation>A Web Service that is describable by a WSDL document.</xs:documentation>
    <xs:documentation>The accessURL element gives the Web Service's endpoint URL.</xs:documentation>
  </xs:annotation>
  <xs:complexContent>
    <xs:extension base="vr:Interface">
      <xs:sequence>
        <xs:element name="wsdlURL" type="xs:anyURI" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:documentation>The location of the WSDL that describes this Web Service. If not provided, the location is assumed to be the accessURL with "?wsdl" appended.</xs:documentation>
            <xs:documentation>Multiple occurances should represent mirror copies of the same WSDL file.</xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:sequence>
    </xs:extension>
  </xs:complexContent>
</xs:complexType>
Attribute vr:Validation / @validatedBy
Namespace No namespace
Annotations
 
The IVOA ID of the registry or organisation that
assigned the validation level.
Type vr:IdentifierURI
Properties
use: required
Facets
pattern ivo://[\w\d][\w\d\-_\.!~\*'\(\)\+=]{2,}(/[\w\d\-_\.!~\*'\(\)\+=]+(/[\w\d\-_\.!~\*'\(\)\+=]+)*)?
Used by
Complex Type vr:Validation
Source
 
<xs:attribute name="validatedBy" type="vr:IdentifierURI" use="required">
  <xs:annotation>
    <xs:documentation>The IVOA ID of the registry or organisation that assigned the validation level.</xs:documentation>
  </xs:annotation>
</xs:attribute>
Attribute vr:Date / @role
Namespace No namespace
Annotations
 
A string indicating what the date refers to.
 
While this vocabulary is uncontrolled, recognized strings 
include "creation", indicating the date that the resource 
itself was created, and "update", indicating when the
resource was updated last.  The default value, 
"representative", means that the date is a rough 
representation of the time coverage of the resource.
 
Note that this date refers to the resource; dates describing
the metadata description of the resource are handled by
the "created" and "updated" attributes of the Resource 
element.
Type xs:string
Properties
default: representative
Used by
Complex Type vr:Date
Source
 
<xs:attribute name="role" type="xs:string" default="representative">
  <xs:annotation>
    <xs:documentation>A string indicating what the date refers to.</xs:documentation>
    <xs:documentation>While this vocabulary is uncontrolled, recognized strings include "creation", indicating the date that the resource itself was created, and "update", indicating when the resource was updated last. The default value, "representative", means that the date is a rough representation of the time coverage of the resource.</xs:documentation>
    <xs:documentation>Note that this date refers to the resource; dates describing the metadata description of the resource are handled by the "created" and "updated" attributes of the Resource element.</xs:documentation>
  </xs:annotation>
</xs:attribute>
Attribute vr:Resource / @created
Namespace No namespace
Annotations
 
The UTC date and time this resource metadata description
was created.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
Type xs:dateTime
Properties
use: required
Used by
Complex Type vr:Resource
Source
 
<xs:attribute name="created" type="xs:dateTime" use="required">
  <xs:annotation>
    <xs:documentation>The UTC date and time this resource metadata description was created.</xs:documentation>
    <xs:documentation>This timestamp must not be in the future. This time is not required to be accurate; it should be at least accurate to the day. Any insignificant time fields should be set to zero.</xs:documentation>
  </xs:annotation>
</xs:attribute>
Attribute vr:Resource / @updated
Namespace No namespace
Annotations
 
The UTC date this resource metadata description was last updated.
 
This timestamp must not be in the future.  This time is
not required to be accurate; it should be at least
accurate to the day.  Any insignificant time fields
should be set to zero.
Type xs:dateTime
Properties
use: required
Used by
Complex Type vr:Resource
Source
 
<xs:attribute name="updated" type="xs:dateTime" use="required">
  <xs:annotation>
    <xs:documentation>The UTC date this resource metadata description was last updated.</xs:documentation>
    <xs:documentation>This timestamp must not be in the future. This time is not required to be accurate; it should be at least accurate to the day. Any insignificant time fields should be set to zero.</xs:documentation>
  </xs:annotation>
</xs:attribute>
Attribute vr:Resource / @status
Namespace No namespace
Annotations
 
a tag indicating whether this resource is believed to be still
actively maintained.
Type restriction of xs:string
Properties
use: required
Facets
enumeration active 
resource is believed to be currently maintained, and its
description is up to date (default).
enumeration inactive 
resource is apparently not being maintained at the present.
enumeration deleted 
resource publisher has explicitly deleted the resource.
Used by
Complex Type vr:Resource
Source
 
<xs:attribute name="status" use="required">
  <xs:annotation>
    <xs:documentation>a tag indicating whether this resource is believed to be still actively maintained.</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:enumeration value="active">
        <xs:annotation>
          <xs:documentation>resource is believed to be currently maintained, and its description is up to date (default).</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="inactive">
        <xs:annotation>
          <xs:documentation>resource is apparently not being maintained at the present.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="deleted">
        <xs:annotation>
          <xs:documentation>resource publisher has explicitly deleted the resource.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>
Attribute vr:SecurityMethod / @standardID
Namespace No namespace
Annotations
 
A URI identifier for a standard security mechanism.
 
This provides a unique way to refer to a security
specification standard.  The use of an IVOA identifier here 
implies that a VOResource description of the standard is 
registered and accessible.
Type xs:anyURI
Properties
content: simple
Used by
Complex Type vr:SecurityMethod
Source
 
<xs:attribute name="standardID" type="xs:anyURI">
  <xs:annotation>
    <xs:documentation>A URI identifier for a standard security mechanism.</xs:documentation>
    <xs:documentation>This provides a unique way to refer to a security specification standard. The use of an IVOA identifier here implies that a VOResource description of the standard is registered and accessible.</xs:documentation>
  </xs:annotation>
</xs:attribute>
Attribute vr:Interface / @version
Namespace No namespace
Annotations
 
The version of a standard interface specification that this 
interface complies with.  When the interface is
provided in the context of a Capability element, then
the standard being refered to is the one identified by
the Capability's standardID element.  If the standardID
is not provided, the meaning of this attribute is
undefined.
Type xs:string
Properties
default: 1.0
Used by
Complex Type vr:Interface
Source
 
<xs:attribute name="version" type="xs:string" default="1.0">
  <xs:annotation>
    <xs:documentation>The version of a standard interface specification that this interface complies with. When the interface is provided in the context of a Capability element, then the standard being refered to is the one identified by the Capability's standardID element. If the standardID is not provided, the meaning of this attribute is undefined.</xs:documentation>
  </xs:annotation>
</xs:attribute>
Attribute vr:Interface / @role
Namespace No namespace
Annotations
 
A tag name the identifies the role the interface plays
in the particular capability.  If the value is equal to
"std" or begins with "std:", then the interface refers
to a standard interface defined by the standard
referred to by the capability's standardID attribute.
 
For an interface complying with some registered
standard (i.e. has a legal standardID), the role can be
match against interface roles enumerated in standard 
resource record.  The interface descriptions in
the standard record can provide default descriptions 
so that such details need not be repeated here.
Type xs:NMTOKEN
Properties
content: simple
Used by
Complex Type vr:Interface
Source
 
<xs:attribute name="role" type="xs:NMTOKEN">
  <xs:annotation>
    <xs:documentation>A tag name the identifies the role the interface plays in the particular capability. If the value is equal to "std" or begins with "std:", then the interface refers to a standard interface defined by the standard referred to by the capability's standardID attribute.</xs:documentation>
    <xs:documentation>For an interface complying with some registered standard (i.e. has a legal standardID), the role can be match against interface roles enumerated in standard resource record. The interface descriptions in the standard record can provide default descriptions so that such details need not be repeated here.</xs:documentation>
  </xs:annotation>
</xs:attribute>
Attribute vr:Capability / @standardID
Namespace No namespace
Annotations
 
A URI identifier for a standard service.
 
This provides a unique way to refer to a service
specification standard, such as a Simple Image Access service.
The use of an IVOA identifier here implies that a
VOResource description of the standard is registered and 
accessible.
Type xs:anyURI
Properties
content: simple
Used by
Complex Type vr:Capability
Source
 
<xs:attribute name="standardID" type="xs:anyURI">
  <xs:annotation>
    <xs:documentation>A URI identifier for a standard service.</xs:documentation>
    <xs:documentation>This provides a unique way to refer to a service specification standard, such as a Simple Image Access service. The use of an IVOA identifier here implies that a VOResource description of the standard is registered and accessible.</xs:documentation>
  </xs:annotation>
</xs:attribute>
XML Schema documentation generated by ® XML Editor.