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> From [log in to unmask] Fri Jun 15 10:37 MET 2001 > MIME-Version: 1.0 > Date: Fri, 15 Jun 2001 10:34:16 +0200 > From: Thomas Baker <[log in to unmask]> > Subject: DCMI Type > To: [log in to unmask] > > Dear all, > > The DCMI Type vocabulary is described on a Web page at > http://dublincore.org/documents/dcmi-type-vocabulary and as an XML/RDF > schema at http://dublincore.org/2000/03/13/dctype (attached below). > > Note that the XML/RDF schema includes the additional class "Resource" > of which the other types are all sub-classes. This is an instance of disagreement between the Schema in DCQual - which is under review - and the Schema put up by the web-team. The DCQual Schema proposal doesn't have that class. Instead it is saying: 'collection' is an rdfs:Class and it is a 'DCMIType' (as the DCMI recommendation indicates) There are other semantic differences as well. rs > > Tom > > ------------ > > <?xml version = "1.0"?> > > <!-- > RDF Schema declaration for the Dublin Core Resource Type Vocabulary > 2001/03/08 > comments, etc. to webteam <[log in to unmask]> > $Id: dctype,v 1.2 2001/03/28 22:41:29 matola Exp $ > --> > <!DOCTYPE rdf:RDF [ > <!ENTITY rdfns 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'> > <!ENTITY rdfsns 'http://www.w3.org/2000/01/rdf-schema#'> > <!ENTITY dcns 'http://purl.org/dc/elements/1.1/'> > <!ENTITY dctypens 'http://dublincore.org/2000/07/11/dctype#'> > <!ENTITY eorns 'http://dublincore.org/2000/03/13/eor#'> > ]> > > <rdf:RDF xmlns:rdf="&rdfns;" > xmlns:rdfs="&rdfsns;" > xmlns:dc="&dcns;" > xmlns:eor="&eorns;"> > > <!-- Description of Schema --> > > <eor:Schema rdf:about="&dctypens;"> > <!-- dumb down rule... use rdf:value for a simple default name --> > <rdf:value>The Dublin Core Type Vocabulary</rdf:value> > <dc:title>The Dublin Core Type Vocabulary</dc:title> > <dc:creator>The Dublin Core Metadata Initiative</dc:creator> > <dc:description>The Dublin Core metadata vocabulary is a simple set > of resource types intended to facilitate discovery of > resources. </dc:description> > <dc:language>English</dc:language> > <dc:relation rdf:resource="http://dublincore.org/documents/dcmi-type-vocabulary/"/> > <dc:date>2000-07-11</dc:date> > </eor:Schema> > > > <!-- Begin Type Declaration --> > > <!-- addition DC Vocabulary range declarations --> > > <rdf:Description rdf:about = "&dctypens;type"> > <rdfs:range rdf:resource = "Resource" /> > </rdf:Description> > > <!-- Class declaration --> > > <rdfs:Class rdf:about = "&dctypens;Resource"> > <rdfs:label>Resource</rdfs:label> > <rdfs:comment>A general class of describable resources.</rdfs:comment> > <rdfs:seeAlso rdf:resource = "http://www.loc.gov/marc/dc/typequalif-19991210.html" /> > <rdfs:subClassOf rdf:resource = "&rdfsns;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Collection"> > <rdfs:label>Collection</rdfs:label> > <rdfs:comment>A collection is an aggregation of items. The term collection > means that the resource is described as a group; its parts may be > separately described and navigated.</rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Dataset"> > <rdfs:label>Dataset</rdfs:label> > <rdfs:comment>A dataset is information encoded in a defined structure (for > example, lists, tables, and databases), intended to be useful for direct > machine processing. </rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Event"> > <rdfs:label>Event</rdfs:label> > <rdfs:comment>An event is a non-persistent, time-based > occurrence. Metadata for an event provides descriptive information > that is the basis for discovery of the purpose, location, duration, > responsible agents, and links to related events and resources. The > resource of type event may not be retrievable if the described > instantiation has expired or is yet to occur. Examples - exhibition, > web-cast, conference, workshop, open-day, performance, battle, trial, > wedding, tea-party, conflagration. </rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Image"> > <rdfs:label>Image</rdfs:label> > <rdfs:comment>An image is a primarily symbolic visual representation > other than text. For example - images and photographs of physical > objects, paintings, prints, drawings, other images and graphics, > animations and moving pictures, film, diagrams, maps, musical > notation. Note that image may include both electronic and physical > representations.</rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;InteractiveResource"> > <rdfs:label>Interactive Resource</rdfs:label> > <rdfs:comment>An interactive resource is a resource which requires > interaction from the user to be understood, executed, or > experienced. For example - forms on web pages, applets, multimedia > learning objects, chat services, virtual reality. </rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Service"> > <rdfs:label>Service</rdfs:label> > <rdfs:comment>A service is a system that provides one or more > functions of value to the end-user. Examples include: a photocopying > service, a banking service, an authentication service, interlibrary > loans, a Z39.50 or Web server. </rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Software"> > <rdfs:label>Software</rdfs:label> > <rdfs:comment>a computer program in source or compiled form which > may be available for installation non-transiently on another > machine. For software which exists only to create an interactive > environment, use interactive instead. </rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Sound"> > <rdfs:label>Sound</rdfs:label> > <rdfs:comment>A sound is a resource whose content is primarily intended to be > rendered as audio. For example - a music playback file format, an audio > compact disc, and recorded speech or sounds. </rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <rdfs:Class rdf:about = "&dctypens;Text"> > <rdfs:label>Text</rdfs:label> > <rdfs:comment>A text is a resource whose content is primarily words > for reading. For example - books, letters, dissertations, poems, > newspapers, articles, archives of mailing lists. Note that facsimiles > or images of texts are still of the genre text. </rdfs:comment> > <rdfs:subClassOf rdf:resource = "&dctypens;Resource" /> > <rdfs:isDefinedBy rdf:resource = "&dctypens;" /> > </rdfs:Class> > > <!-- End: Type --> > > </rdf:RDF> > > _______________________________________________________________________________ > Dr. Thomas Baker [log in to unmask] > GMD Library > Schloss Birlinghoven +49-2241-14-2352 > 53754 Sankt Augustin, Germany fax +49-2241-14-2619 >