Dublin Core (Registered Trademark) Metadata Initiative logo and catchphrase: 
Making it easier to find information
Jump to main content: This Page
Jump to site map: New Page
The Metadata Community — Supporting Innovation in Metadata Design, Implementation & Best Practices
Dublin Core (Registered Trademark) logo innovation banner Join us logo
 
 

 

Revisions to DCMI Metadata Terms

Creator: Thomas Baker
DCMI
Date Issued: 2008-01-14
Identifier: http://dublincore.org/usage/decisions/2008/dcterms-changes/
Replaces: http://dublincore.org/usage/public-comment/2007/07/dcterms-changes/
Description of Document: This set of editorial clarifications to descriptions of DCMI metadata terms was approved by the DCMI Usage Board after discussion at a face-to-face meeting in Singapore on 25 August 2007 and in consideration of comments made in a Public Comment period from 2 to 30 July 2007.

Table of contents

  1. About the revisions
  2. Types of revisions
  3. Revisions, term by term
  4. References

1. About the revisions

The document proposes a set of editorial revisions to terms in the set of DCMI Metadata Terms [DCTERMS]. The changes are summarized in Section 2 and detailed, term by term, in Section 3. This document should be considered in conjunction with a separate but related document, "Domains and Ranges for DCMI Properties", which describes a set of classes and their use as domains and ranges of DCMI properties [DOMAINS].

This document follows on an earlier revision of terms in the Dublin Core Metadata Element Set (DCMES) [DCMES-CHANGES], which was undertaken in order to clarify intended semantics and bring the wording of definitions and usage comments into line with the language of the DCMI Abstract Model [DCAM].

The changes described here will be published in revised versions of the Web documents "DCMI Metadata Terms" [DCTERMS] and "DCMI Metadata Terms: A complete historical record" [DCTERMS-HISTORY].

All of the changes described here have been evaluated by the DCMI Usage Board in light of the DCMI Namespace Policy [NAMESPACE]. The namespace policy says that DCMI terms are identified using Uniform Resource Identifiers (URIs). In accordance with the principle that distinct URIs should be assigned to distinct resources, the policy sets limits on the range of editorial changes that may allowably be made to the official labels, definitions, and usage comments associated with DCMI terms. By policy, any changes of meaning judged "likely to have a substantial impact on either machine processing of DCMI terms or the functional semantics of the terms" must trigger the creation of a new, distinct term with a new, distinct URI.

In the opinion of the Usage Board, the changes described in this document are unlikely to have a substantial impact on either machine processing of DCMI terms or the functional semantics of the terms -- i.e., they fall within the allowable range of editorial change. The changes constitute clarifications of term semantics in light of improved theoretical understanding, user feedback, and implementation experience. They are intended to provide the final twist of the lens that brings intended meanings more sharply into focus.

2. Types of revisions

Free-standing descriptive labels

When terms such as dcterms:available were first coined as "Dublin Core qualifiers" in 2000 [QUALIFIERS], it was not clear whether qualifiers were intended to be used like adjectives -- i.e., in conjunction with the Dublin Core elements they modified -- or like nouns (i.e., as elements in their own right). The labels assigned at the time, such as "Available", pointed to the former approach, but DCMI grammatical principles, and later the DCMI Abstract Model, ratified the latter approach. The terms dcterms:alternative, dcterms:available, dcterms:created, dcterms:issued, dcterms:modified, dcterms:valid, dcterms:spatial, and dcterms:temporal have been re-named with free-standing labels such as "Date Created" (instead of just "Created") and "Alternative Title" instead of just "Alternative").

The phrase "content of the resource"

As described in [DCMES-CHANGES], wordings which distinguish the "content of" a resource have been revised to refer directly to a resource. In the current batch, this change is relevant to the definitions of: dcterms:abstract, dcterms:tableOfContents, dcterms:isFormatOf, dcterms:hasFormat, dcterms:spatial, dcterms:temporal, dcterms:DCMIType, and dcterms:requires.

The phrase "reference to a resource"

Definitions which specify encoding practice with phrases such as "reference to a resource" have been revised as described in [DCMES-CHANGES]. This change is relevant to the definition of dcterms:conformsTo. Note, however, that the definition of dcterms:bibliographicCitation remains "A bibliographic reference for the resource".

The phrase "use a controlled vocabulary"

It is now generally recommended that controlled vocabularies be used in metadata, so specific usage advice along these lines has been removed from the comments for dcterms:accrualMethod, dcterms:accrualPeriodicity, and dcterms:accrualPolicy.

Types of "encoding schemes"

The revised DCMI Abstract Model [DCAM] draws a clear distinction between Vocabulary Encoding Schemes and Syntax Encoding Schemes. Existing terms hitherto classified as "encoding schemes" have been designated in this batch of revisions, more specifically, as Vocabulary Encoding Schemes (dcterms:DCMIType, dcterms:DDC, dcterms:IMT, dcterms:LCC, dcterms:LCSH, dcterms:MESH, dcterms:NLM, dcterms:TGN, and dcterms:UDC) or Syntax Encoding Schemes (dcterms:Box, dcterms:ISO3166, dcterms:ISO639-2, dcterms:Period, dcterms:Point, dcterms:RFC1766, dcterms:RFC3066, dcterms:RFC4646, dcterms:URI, and dcterms:W3CDTF).

Encoding scheme definitions

In accordance with the differentiation of encoding schemes into Vocabulary Encoding Schemes and Syntax Encoding Schemes, the Usage Board has revised their definitions to make clear how the encoding schemes are being seen and interpreted from a modeling point of view. Vocabulary Encoding Schemes are interpreted variously as sets of:

Syntax Encoding Schemes are interpreted variously as sets of:

A thorough discussion of these interpretations is beyond the scope of this document.

Definitions versus Comments

Parts of some term Definitions have been moved into Comments (see dcterms:isVersionOf, dcterms:dateAccepted, and dcterms:dateSubmitted).

Relation of a property to a "described resource"

Some definitions have revised to make clear how a property relates to the "described resource" (dcterms:instructionalMethod, dcterms:isVersionOf, dcterms:isReplacedBy, dcterms:replaces, dcterms:isRequiredBy, dcterms:requires, dcterms:isPartOf, dcterms:hasPart, dcterms:isReferencedBy, dcterms:references, dcterms:isFormatOf, and dcterms:hasFormat).

References to IETF Requests for Comment (RFCs)

Some term declarations make reference to "Request for Comment" (RFC) standards maintained by The Internet Engineering Task Force (IETF). When RFC standards are updated, their numbers change, and the newer standard (with a higher number) obsoletes the older standard. In this batch of revisions, references to RFCs have been updated:

Updates to existing DCMI Syntax Encoding Schemes for RFCs and ISO standards

The first batch of "Dublin Core Qualifiers" of July 2000 included encoding schemes for RFC 1766 (tags for the identification of languages), ISO 639-2 (codes for the representation of names of languages), and ISO 3166 (codes for the representation of names of countries). An encoding scheme for RFC 3066 (which obsoleted RFC 1766) was added in 2002. Although the Usage Board currently prefers to encourage standardization communities to assign URIs to properties and encoding schemes on their own authority, the Board has taken a pragmatic stance towards identifying standards related to the RFCs and ISO standards identified with existing DCMI encoding schemes. This current batch therefore includes new syntax encoding schemes for RFC 4646 (which obsoletes RFC 3066) and ISO 639-3 (codes for the representation of names of languages).

Revisions in response to the five-year review for NISO Z39.85-2007

A five-year review of ANSI/NISO Z39.85 (The Dublin Core Metadata Element Set) resulted in the revised standard ANSI/NISO Z39.85-2007 in May 2007 [NISOZ39-85]. Minor changes of wording undertaken in response to comments received through the ANSI/NISO process have been included in this document (see dcterms:source, dcterms:subject, dcterms:language, and dcterms:coverage). In response to the comment that the Comment for dcterms:title was potentially misleading, the Usage Board decided to delete the comment altogether.

The statement "qualifies:"

When "Dublin Core qualifiers" were first published in 2000 [QUALIFIERS], encoding schemes were associated with specific elements -- e.g., dcterms:LCSH was considered to be a qualifier for dc:subject. In light of subsequent work on the DCMI model, however, the association between a property and a Vocabulary Encoding Scheme or Syntax Encoding Scheme is now seen as something more appropriately declared in an application profile than in the formal declaration of a vocabulary. "Qualifies:" statements have therefore been removed from the term descriptions for dcterms:DDC, dcterms:LCC, dcterms:UDC, dcterms:DCMIType, dcterms:IMT, dcterms:ISO639-2, dcterms:RFC1766, dcterms:URI, dcterms:Point, dcterms:ISO3166, dcterms:Box, dcterms:TGN, dcterms:Period, dcterms:W3CDTF, dcterms:RFC3066, dcterms:NLM, dcterms:LCSH, and dcterms:MESH. Methods for the formal expression of such an association in the RDF schemas published by DCMI were never finalized as a DCMI Recommendation [DCQ-RDF] and have since been superseded by new guidelines for expressing Dublin Core metadata in RDF [DC-RDF], as discussed in "Notes on DCMI specifications for Dublin Core metadata in RDF" [DC-RDF-NOTES].

SubjectScheme and other "undeclared" members of the TERMS namespace

It is worth noting that since March 2000, seven classes with URIs based on http://purl.org/dc/terms/ (the "TERMS" namespace) have been used in RDF schemas published by DCMI. These classes were dcterms:DateScheme, dcterms:FormatScheme, dcterms:IdentifierScheme, dcterms:LanguageScheme, dcterms:SpatialScheme, dcterms:SubjectScheme, and dcterms:TypeScheme. These classes were added to the RDF expressions on the basis of "qualfies:" statements (see above) as part of an automatic routine for generating updated documentation for DCMI terms. At the time, the classes served to associate a set of encoding schemes with a particular property (e.g., to associate dcterms:LCSH with dc:subject). Since the terms were never officially declared (outside of their undocumented use in the RDF schemas), DCMI does not consider them to fall under the DCMI Namespace Policy [NAMESPACE]. With the removal of the "qualifies:" statements and the revision of guidelines for expressing Dublin Core metadata in RDF (see above), these undeclared classes will cease to be used in DCMI term declarations.

New terms related to the DCMI Abstract Model

As described in the revised DCMI Namespace Policy [NAMESPACE], a DCMI namespace has been created as the base URI for terms used in the DCMI Abstract Model (http://purl.org/dc/dcam/, here dcam:). Two new dcam: terms -- dcam:memberOf and dcam:VocabularyEncodingScheme -- have been created with the finalization of the revised DCMI Abstract Model as a DCMI Recommendation in June 2007 [DCAM].

The Vocabulary Encoding Scheme "DCMI Type Vocabulary" and its member terms

As of January 2008, member terms of the DCMI Type Vocabulary, such as dcmitype:Collection, are classes (rdfs:Class), and these classes are "members of" the DCMI Type Vocabulary, a Vocabulary Encoding Scheme.

The relationship between the DCMI Type Vocabulary and its member terms has evolved over the past seven years as the model underlying Dublin Core metadata has been formalized in the current DCMI Abstract Model. The set of Dublin Core Qualifiers published in July 2000 included twenty Encoding Schemes -- a type of term defined in terms of its use to "identify schemes that aid in the interpretation of an element value". The RDF schemas at the time went further, declaring all encoding schemes as classes (rdfs:Class).

The terms of the DCMI Type Vocabulary (such as http://purl.org/dc/dcmitype/Collection) were first published in 2000 as a "list of approved terms that may be used as values for the Resource Type element". In 2003 the terms were listed as "Vocabulary Terms" -- a "type of term" defined in the legacy specification "DCMI Grammatical Principles" as indicating "that the value is a term from a controlled vocabulary, such as the value 'China - History' from the Library of Congress Subject Headings" [PRINCIPLES]. The RDF schema representation declared the member terms of the Type Vocabulary as "classes" (rdfs:Class) and declared these classes to be instances of the class "DCMI Type Vocabulary" (rdf:type dcterms:DCMIType).

Since 2007, the DCMI Abstract Model applies the principle that a resource of any type may be a member of a Vocabulary Encoding Scheme. The Abstract Model introduces the property "Member Of" (dcam:memberOf) to express the relationship between a resource and a Vocabulary Encoding Scheme (dcam:VocabularyEncodingScheme), now defined as "An enumerated set of resources". (The DCMI Type Vocabulary may therefore be described as an enumerated set of classes.)

In the RDF schemas of January 2008, assertions that member terms of the DCMI Type Vocabulary are "instances of" an Encoding Scheme (interpreted as rdfs:Class) have been replaced by assertions that the terms are "members of" a Vocabulary Encoding Scheme (dcam:VocabularyEncodingScheme).

Addition of domains and ranges for existing properties and creation of new properties

A separate document, "Domains and ranges for DCMI properties" [DOMAINS], proposes a vocabulary of classes for use as formal domains and ranges of DCMI properties. Domains and ranges specify -- in a form usable for inferencing -- what kind of described resources and value resources are associated with a given property. The assignment of formal domains and ranges makes the meanings implicit in natural-language definitions available for machine processing.

So as not to affect the conformance of existing implementations of Simple Dublin Core in RDF, domains and ranges have not been specified for the fifteen properties of the Dublin Core Metadata Element Set (DCMES), Version 1.1, which are identified by URIs in the DCMI namespace http://purl.org/dc/elements/1.1/. Rather, fifteen new properties with "names" identical to those of DCMES Version 1.1 have been created in the DCMI namespace http://purl.org/dc/terms/. These fifteen new properties have been declared to be subproperties of the corresponding properties in DCMES Version 1.1 and assigned domains and ranges as outlined in this document.

Subproperty relations between terms in "the Dublin Core"

In the early years of "the Dublin Core", it was noticed that some of the fifteen elements could be seen as fitting semantically within the scope of others (e.g., "source" as just a specialized type of "relation"). Because "elements" were seen as typologically distinct from "qualifiers", however, it was problematic to express such semantic relations formally. As the DCMI Abstract Model no longer makes such a typological distinction, the current batch of revisions includes formal assertions that dcterms:creator is a subproperty of dcterms:contributor and that dcterms:source is a subproperty of dcterms:relation. As with the assignment of domains and ranges, these assertions are made only for properties newly created in the namespace http://purl.org/dc/terms/. So as not to affect the conformance of existing implementations, no such assertions are made for the existing properties of DCMES Version 1.1.

Comments deleted

In addition to the Comment for dcterms:title, various other Comments were found to be no longer useful and simply deleted (dcterms:audience, dcterms:license dcterms:rightsHolder, dcterms:accrualMethod, dcterms:accrualPeriodicity, dcterms:accrualPolicy).

Special cases

Editorial revision has sometimes involved deciding among different possible interpretations of terms (e.g., dcterms:educationLevel) and making minor clarifications of wording too subtle to merit separate explanations (e.g., dcterms:accessRights). Section 3 lists old and new versions side-by-side so that readers may judge the differences for themselves.

3. Revisions, term by term

http://purl.org/dc/terms/creator
New subPropertyOf http://purl.org/dc/terms/contributor
http://purl.org/dc/terms/source
Current definition A resource from which the described resource is derived.
New definition A related resource from which the described resource is derived.
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/elements/1.1/coverage
Current comment Spatial topic may be a named place or a location specified by its geographic coordinates. Temporal period may be a named period, date, or date range. A jurisdiction may be a named administrative entity or a geographic place to which the resource applies. Recommended best practice is to use a controlled vocabulary such as the Thesaurus of Geographic Names [TGN]. Where appropriate, named places or time periods can be used in preference to numeric identifiers such as sets of coordinates or date ranges.
New comment Spatial topic and spatial applicability may be a named place or a location specified by its geographic coordinates. Temporal topic may be a named period, date, or date range. A jurisdiction may be a named administrative entity or a geographic place to which the resource applies. Recommended best practice is to use a controlled vocabulary such as the Thesaurus of Geographic Names [TGN]. Where appropriate, named places or time periods can be used in preference to numeric identifiers such as sets of coordinates or date ranges.
http://purl.org/dc/elements/1.1/language
Current comment Recommended best practice is to use a controlled vocabulary such as RFC 3066 [RFC3066].
Current see also http://www.ietf.org/rfc/rfc3066.txt
New comment Recommended best practice is to use a controlled vocabulary such as RFC 4646 [RFC4646].
New see also http://www.ietf.org/rfc/rfc4646.txt
http://purl.org/dc/elements/1.1/subject
Current comment Typically, the topic will be represented using keywords, key phrases, or classification codes. Recommended best practice is to use a controlled vocabulary. To describe the spatial or temporal topic of the resource, use the Coverage element.
New comment Typically, the subject will be represented using keywords, key phrases, or classification codes. Recommended best practice is to use a controlled vocabulary. To describe the spatial or temporal topic of the resource, use the Coverage element.
http://purl.org/dc/elements/1.1/title
Current comment Typically, a Title will be a name by which the resource is formally known.
New comment [comment deleted]
http://purl.org/dc/terms/audience
Current comment A class of entity may be determined by the creator or the publisher or by a third party.
Current type of term http://dublincore.org/usage/documents/principles/#element
New comment [comment deleted]
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/alternative
Current label Alternative
Current definition Any form of the title used as a substitute or alternative to the formal title of the resource.
Current comment This qualifier can include Title abbreviations as well as translations.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/title
New label Alternative Title
New definition An alternative name for the resource.
New comment The distinction between titles and alternative titles is application-specific.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/title
New subPropertyOf http://purl.org/dc/terms/title
http://purl.org/dc/terms/tableOfContents
Current definition A list of subunits of the content of the resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/description
New definition A list of subunits of the resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/description
New subPropertyOf http://purl.org/dc/terms/description
http://purl.org/dc/terms/abstract
Current definition A summary of the content of the resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/description
New definition A summary of the resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/description
New subPropertyOf http://purl.org/dc/terms/description
http://purl.org/dc/terms/created
Current label Created
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New label Date Created
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/date
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/valid
Current label Valid
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New label Date Valid
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/date
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/available
Current label Available
Current definition Date (often a range) that the resource will become or did become available.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New label Date Available
New definition Date (often a range) that the resource became or will become available.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/date
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/issued
Current label Issued
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New label Date Issued
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/date
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/modified
Current label Modified
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New label Date Modified
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/elements/1.1/date
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/extent
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/format
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/format
http://purl.org/dc/terms/medium
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/format
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/format
http://purl.org/dc/terms/isVersionOf
Current definition The described resource is a version, edition, or adaptation of the referenced resource. Changes in version imply substantive changes in content rather than differences in format.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource of which the described resource is a version, edition, or adaptation.
New comment Changes in version imply substantive changes in content rather than differences in format.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/hasVersion
Current definition The described resource has a version, edition, or adaptation, namely, the referenced resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that is a version, edition, or adaptation of the described resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/isReplacedBy
Current definition The described resource is supplanted, displaced, or superseded by the referenced resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that supplants, displaces, or supersedes the described resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/replaces
Current definition The described resource supplants, displaces, or supersedes the referenced resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that is supplanted, displaced, or superseded by the described resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/isRequiredBy
Current definition The described resource is required by the referenced resource, either physically or logically.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that requires the described resource to support its function, delivery, or coherence.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/requires
Current definition The described resource requires the referenced resource to support its function, delivery, or coherence of content.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that is required by the described resource to support its function, delivery, or coherence.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/isPartOf
Current definition The described resource is a physical or logical part of the referenced resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource in which the described resource is physically or logically included.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/hasPart
Current definition The described resource includes the referenced resource either physically or logically.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that is included either physically or logically in the described resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/isReferencedBy
Current definition The described resource is referenced, cited, or otherwise pointed to by the referenced resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that references, cites, or otherwise points to the described resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/references
Current definition The described resource references, cites, or otherwise points to the referenced resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that is referenced, cited, or otherwise pointed to by the described resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/isFormatOf
Current definition The described resource is the same intellectual content of the referenced resource, but presented in another format.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that is substantially the same as the described resource, but in another format.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/hasFormat
Current definition The described resource pre-existed the referenced resource, which is essentially the same intellectual content presented in another format.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition A related resource that is substantially the same as the pre-existing described resource, but in another format.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/conformsTo
Current definition A reference to an established standard to which the resource conforms.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/relation
New definition An established standard to which the described resource conforms.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/relation
http://purl.org/dc/terms/spatial
Current label Spatial
Current definition Spatial characteristics of the intellectual content of the resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/coverage
New label Spatial Coverage
New definition Spatial characteristics of the resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/coverage
http://purl.org/dc/terms/temporal
Current label Temporal
Current definition Temporal characteristics of the intellectual content of the resource.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/coverage
New label Temporal Coverage
New definition Temporal characteristics of the resource.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/coverage
http://purl.org/dc/terms/mediator
Current comment The audiences for a resource are of two basic classes: (1) an ultimate beneficiary of the resource, and (2) frequently, an entity that mediates access to the resource. The mediator element refinement represents the second of these two classes.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
New comment In an educational context, a mediator might be a parent, teacher, teaching assistant, or care-giver.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/dateAccepted
Current definition Date of acceptance of the resource (e.g. of thesis by university department, of article by journal, etc.).
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New definition Date of acceptance of the resource.
New comment Examples of resources to which a Date Accepted may be relevant are a thesis (accepted by a university department) or an article (accepted by a journal).
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/dateCopyrighted
Current definition Date of a statement of copyright.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New definition Date of copyright.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/dateSubmitted
Current definition Date of submission of the resource (e.g. thesis, articles, etc.).
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/date
New definition Date of submission of the resource.
New comment Examples of resources to which a Date Submitted may be relevant are a thesis (submitted to a university department) or an article (submitted to a journal).
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/date
http://purl.org/dc/terms/educationLevel
Current definition A general statement describing the education or training context. Alternatively, a more specific statement of the location of the audience in terms of its progression through an education or training context.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
New definition A class of entity, defined in terms of progression through an educational or training context, for which the described resource is intended.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/accessRights
Current comment Access Rights may include information regarding access or restrictions based on privacy, security or other regulations.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/rights
New comment Access Rights may include information regarding access or restrictions based on privacy, security or other policies.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/rights
http://purl.org/dc/terms/bibliographicCitation
Current comment Recommended practice is to include sufficient bibliographic detail to identify the resource as unambiguously as possible, whether or not the citation is in a standard form.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/identifier
New comment Recommended practice is to include sufficient bibliographic detail to identify the resource as unambiguously as possible.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/identifier
http://purl.org/dc/terms/license
Current comment Recommended best practice is to identify the license using a URI. Examples of such licenses can be found at http://creativecommons.org/licenses/.
Current type of term http://dublincore.org/usage/documents/principles/#element-refinement
Current subPropertyOf http://purl.org/dc/elements/1.1/rights
New comment [comment deleted]
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
New subPropertyOf http://purl.org/dc/terms/rights
http://purl.org/dc/terms/rightsHolder
Current comment Recommended best practice is to use the URI or name of the Rights Holder to indicate the entity.
Current type of term http://dublincore.org/usage/documents/principles/#element
New comment [comment deleted]
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/provenance
Current type of term http://dublincore.org/usage/documents/principles/#element
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/instructionalMethod
Current definition A process, used to engender knowledge, attitudes and skills, that the resource is designed to support.
Current type of term http://dublincore.org/usage/documents/principles/#element
New definition A process, used to engender knowledge, attitudes and skills, that the described resource is designed to support.
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/accrualMethod
Current comment Recommended best practice is to use a value from a controlled vocabulary.
Current type of term http://dublincore.org/usage/documents/principles/#element
New comment [comment deleted]
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/accrualPeriodicity
Current comment Recommended best practice is to use a value from a controlled vocabulary.
Current type of term http://dublincore.org/usage/documents/principles/#element
New comment [comment deleted]
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/accrualPolicy
Current comment Recommended best practice is to use a value from a controlled vocabulary.
Current type of term http://dublincore.org/usage/documents/principles/#element
New comment [comment deleted]
New type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/terms/LCSH
Current definition Library of Congress Subject Headings
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/subject
New definition The set of labeled concepts specified by the Library of Congress Subject Headings.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/MESH
Current definition Medical Subject Headings
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/subject
New definition The set of labeled concepts specified by the Medical Subject Headings.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/DDC
Current definition Dewey Decimal Classification
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/subject
New definition The set of conceptual resources specified by the Dewey Decimal Classification.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/LCC
Current definition Library of Congress Classification
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/subject
New definition The set of conceptual resources specified by the Library of Congress Classification.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/UDC
Current definition Universal Decimal Classification
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/subject
New definition The set of conceptual resources specified by the Universal Decimal Classification.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/DCMIType
Current definition A list of types used to categorize the nature or genre of the content of the resource.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/type
New definition The set of classes specified by the DCMI Type Vocabulary, used to categorize the nature or genre of the resource.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/IMT
Current definition The Internet media type of the resource.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/format
New definition The set of media types specified by the Internet Assigned Numbers Authority.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/ISO639-2
Current definition ISO 639-2: Codes for the representation of names of languages.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/language
New definition The three-letter alphabetic codes listed in ISO639-2 for the representation of names of languages.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/RFC1766
Current definition Internet RFC 1766 'Tags for the identification of Language' specifies a two letter code taken from ISO 639, followed optionally by a two letter country code taken from ISO 3166.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/language
New definition The set of tags, constructed according to RFC 1766, for the identification of languages.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/URI
Current definition A URI Uniform Resource Identifier
Current see also http://www.ietf.org/rfc/rfc2396.txt
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/identifier
Current "qualifies" http://purl.org/dc/elements/1.1/source
Current "qualifies" http://purl.org/dc/elements/1.1/relation
New definition The set of identifiers constructed according to the generic syntax for Uniform Resource Identifiers as specified by the Internet Engineering Task Force.
New see also http://www.ietf.org/rfc/rfc3986.txt
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/Point
Current definition The DCMI Point identifies a point in space using its geographic coordinates.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/terms/spatial
New definition The set of points in space defined by their geographic coordinates according to the DCMI Point Encoding Scheme.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/ISO3166
Current definition ISO 3166 Codes for the representation of names of countries
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/terms/spatial
New definition The set of codes listed in ISO 3166-1 for the representation of names of countries.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/Box
Current definition The DCMI Box identifies a region of space using its geographic limits.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/terms/spatial
New definition The set of regions in space defined by their geographic coordinates according to the DCMI Box Encoding Scheme.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/TGN
Current definition The Getty Thesaurus of Geographic Names
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/terms/spatial
New definition The set of places specified by the Getty Thesaurus of Geographic Names.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/Period
Current definition A specification of the limits of a time interval.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/date
Current "qualifies" http://purl.org/dc/terms/temporal
New definition The set of time intervals defined by their limits according to the DCMI Period Encoding Scheme.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/W3CDTF
Current definition W3C Encoding rules for dates and times - a profile based on ISO 8601
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/date
Current "qualifies" http://purl.org/dc/terms/temporal
New definition The set of dates and times constructed according to the W3C Date and Time Formats Specification.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/RFC3066
Current definition Internet RFC 3066 'Tags for the Identification of Languages' specifies a primary subtag which is a two-letter code taken from ISO 639 part 1 or a three-letter code taken from ISO 639 part 2, followed optionally by a two-letter country code taken from ISO 3166. When a language in ISO 639 has both a two-letter and three-letter code, use the two-letter code; when it has only a three-letter code, use the three-letter code. This RFC replaces RFC 1766.
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/language
New definition The set of tags constructed according to RFC 3066 for the identification of languages.
New comment RFC 3066 has been obsoleted by RFC 4646.
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/NLM
Current definition National Library of Medicine Classification
Current type of term http://dublincore.org/usage/documents/principles/#encoding-scheme
Current "qualifies" http://purl.org/dc/elements/1.1/subject
New definition The set of conceptual resources specified by the National Library of Medicine Classification.
New type of term http://purl.org/dc/dcam/VocabularyEncodingScheme
http://purl.org/dc/terms/RFC4646
New label RFC 4646
New definition The set of tags constructed according to RFC 4646 for the identification of languages.
New comment RFC 4646 obsoletes RFC 3066.
New see also http://www.ietf.org/rfc/rfc4646.txt
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/terms/ISO639-3
New label ISO 639-3
New definition The set of three-letter codes listed in ISO 639-3 for the representation of names of languages.
New see also http://www.sil.org/iso639-3/
New type of term http://www.w3.org/2000/01/rdf-schema#Datatype
http://purl.org/dc/dcam/memberOf
Current label Member Of
Current definition A relationship between a resource and a vocabulary encoding scheme which indicates that the resource is a member of a set.
Current see also http://dublincore.org/documents/2007/06/04/abstract-model/
Current type of term http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
http://purl.org/dc/dcam/VocabularyEncodingScheme
Current label Vocabulary Encoding Scheme
Current definition An enumerated set of resources.
Current see also http://dublincore.org/documents/2007/06/04/abstract-model/
Current type of term http://www.w3.org/2000/01/rdf-schema#Class

References

[DCAM]
Powell, Andy, Mikael Nilsson, Ambjörn Naeve, Pete Johnston and Thomas Baker. DCMI Abstract Model. DCMI Recommendation. June 2007.
http://dublincore.org/documents/2007/06/04/abstract-model/

[DC-RDF]
http://dublincore.org/documents/dc-rdf/

[DC-RDF-NOTES]
http://dublincore.org/documents/dc-rdf-notes/

[DCMES-CHANGES]
http://dublincore.org/usage/decisions/2006/2006-03.dcmes-changes.shtml

[DCTERMS]
http://dublincore.org/documents/dcmi-terms/

[DCTERMS-HISTORY]
http://dublincore.org/usage/terms/history/

[DCTYPE]
http://dublincore.org/documents/dcmi-type-vocabulary/

[DCQ-RDF]
http://dublincore.org/documents/2002/05/15/dcq-rdf-xml/

[DOMAINS]
http://dublincore.org/documents/2008/01/14/domain-range/

[NAMESPACE]
http://dublincore.org/documents/dcmi-namespace/

[NISOZ39-85]
http://www.niso.org/standards/resources/Z39-85-2007.pdf

[PRINCIPLES]
http://dublincore.org/usage/documents/2007/12/03/principles/

[QUALIFIERS]
http://dublincore.org/documents/2000/07/11/dcmes-qualifiers/

Copyright © 1995-2014 DCMI. All Rights Reserved.