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DCterms XML Schema
XML Schema for http://purl.org/dc/terms/ namespace
Created 2008-02-11
Created by
Tim Cole (t-cole3@uiuc.edu)
Tom Habing (thabing@uiuc.edu)
Jane Hunter (jane@dstc.edu.au)
Pete Johnston (p.johnston@ukoln.ac.uk),
Carl Lagoze (lagoze@cs.cornell.edu)
This schema declares XML elements for the DC elements and
DC element refinements from the http://purl.org/dc/terms/ namespace.
It reuses the complexType dc:SimpleLiteral, imported from the dc.xsd
schema, which permits simple element content, and makes the xml:lang
attribute available.
This complexType permits the derivation of other complexTypes
which would permit child elements.
XML elements corresponding to DC elements are declared as substitutable for the abstract element dc:any, and
XML elements corresponding to DC element refinements are defined as substitutable for the base elements
which they refine.
This means that the default type for all XML elements (i.e. corresponding to all DC elements and
element refinements) is dc:SimpleLiteral.
Encoding schemes are defined as complexTypes which are restrictions
of the dc:SimpleLiteral complexType. These complexTypes restrict
values to an appropriates syntax or format using data typing,
regular expressions, or enumerated lists.
In order to specify one of these encodings an xsi:type attribute must
be used in the instance document.
Also, note that one shortcoming of this approach is that any type can be
applied to any of the elements or refinements. There is no convenient way
to restrict types to specific elements using this approach.
Changes in 2008-02-11 version:
Add element declarations corresponding to 15 new dcterms URIs, and amend use of substitutionGroups.
Add compexType definitions corresponding to ISO639-3, RFC4646.
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