4.13. Relation
Label: Relation
Element Description: An identifier of a second resource and its relationship to the present resource. This element permits links between related resources and resource descriptions to be indicated. Examples include an edition of a work (IsVersionOf), a translation of a work (IsBasedOn), a chapter of a book (IsPartOf), and a mechanical transformation of a dataset into an image (IsFormatOf). For the sake of interoperability, relationships should be selected from an enumerated list that is currently under development in the workshop series.
A list of types which accommodates most expected relationships is:
Guidelines for creation of content:
The recommended method for expressing a relationship in unqualified DC is:
Title="the present resource"
Relation="relationship-type [space] unique identifer for the related
resource"
where "relationship-type" is a token drawn from the list above.
Note: In the case where the DC metadata is embedded in the present resource, the value for Identifier is implied (i.e. the present resource). In qualified DC the two components given in Relation here will be structured using sub-elements for easier automated processing.
Examples
[collection of two novellas, one of which is "Reading Turgenev"]
Title="Reading Turgenev"
Relation ="IsPartOf Two Lives"
[Part/Whole relations are those in which one resource is a physical or logical part of another]
Title="Candle in the Wind"
Subject="Diana, Princess of Wales"
Date="1997"
Creator="John, Elton"
Type="sound"
Description="Tribute to a dead princess"
Relation="IsVersionOf Elton John's 1976 song Candle in the Wind"
Title="Gombrich's Story of Art"
Relation="HasVersion 13th Edition, 1972"
[Version relations are those in which one resource is an historical state or edition, of another resource by the same creator]
Title="Electronic AACR2"
Relation="IsFormatOf Anglo-American Cataloging Rules, 2nd edition"
Title="Landsat TM dataset of Arnhemland, NT, Australia"
Relation="HasFormat arnhem.gif"
[Format transformation relations are those in which one resource has been derived from another by a reproduction or reformatting technology which is not fundamentally an interpretation but intended to be a representation.]
Title="Morgan's Ancient Society"
Relation="IsReferencedBy Engels' Origin of the Family,
Private Property and the State"
Title="Nymphet Mania"
Relation="References Adrian Lyne's 'Lolita'"
[Reference relations are those in which the author of one resource cites, acknowledges, disputes or otherwise make claims about another resource.]
Title="Peter Carey's novel Oscar and Lucinda"
Relation="IsBasisFor 1998 movie Oscar and Lucinda"
Title="The movie My Fair Lady"
Relation="IsBasedOn Shaw's play Pygmalion"
[Creative relations are those in which one resource is a performance, production, derivation, adaptation or interpretation of another resource.]
Title="program.c"
Relation= Requires stdio.h"
Title="List of Internet Media Types" Relation="IsRequiredBy
Dublin Core Format element"
[Dependency relations are those in which one resource requires another resource for its functioning, delivery, or content and cannot be used without the related resource being present.]
Qualifiers for DC.Relation
From LC
SCHEME:
(Default is free text)
URL
URN
ISBN
TYPE: This element is considered to be developing rapidly within the context of collection-level descriptions. Subelements may be defined at a later date. The following Relation categories were enumerated at DC5; these should not be considered formal subelement names:
Creative (e.g. translation, annotation)
Mechanical (copy, format change, mirror copy)
Version (edition, draft)
Inclusion (collection, part)
Reference (citation)
From
UK
Scheme
URL
The related resource is being identified by its Uniform Resource Locator (URL). This is the default identifier/scheme value if the identifier/scheme is not explicitly stated.
URN
The related resource is being identified by its Uniform Resource Name (URN).
ISBN
The related resource is being identified by its International Standard Book Number (ISBN).
ISSN
The related resource is being identified by its International Standard Serial Number (ISSN).
FPI
The related resoure is being identified by its Formal Public Identifier (FPI).
Type
IsParentOf
The resource being described by this set of Dublin Core metadata is higher in some arbitrary hierarchy than the resource being pointed to by this Relation element. This is the default type value if the type is not explicitly stated.
IsChildOf
The resource being described by this set of Dublin Core metadata is lower in some arbitrary hierarchy than the resource being pointed to by this Relation element.
IsMemberOf
The resource being described by this set of Dublin Core metadata is a member of a group of works whose entry point or overall identifier is provided by this Relation element.
IsDerivedFrom
The resource being described by this set of Dublin Core metadata is derived from the resource being pointed to by this Relation element.
HasBibliographicInfoIn
The resource being pointed to by this relation provides bibliographic information for the main resource.
IsRevisionHistoryFor
The resource being pointed to by this relation provides a history of revisions made to the main resource which the Dublin Core metadata was created for.
IsCriticalReviewOf
The resource being pointed to by this relation provides a review of the resource being described by the Dublin Core metadata.
IsOverviewOf
The resource being described by the Dublin Core metadata is overviewed in the resource pointed to by this relation.
IsContentRatingFor
The resource pointed to by this relation is a set of content ratings for the resource being described by the Dublin Core metadata.
IsTermsAndConditionsFor
The terms and conditions for access to the resource described by this set of Dublin Core metadata are outlined in the resource pointed to by this relation.
IsDataFor
Provides dataset or programs for another resource.
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