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   RE: Standard way to express object, not resource, rels in XML?

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  • From: Jonathan Borden <jborden@mediaone.net>
  • To: Mike Brown <mbrown@corp.webb.net>, xml-dev@lists.xml.org
  • Date: Fri, 18 Aug 2000 22:33:53 -0400

> RDF seems to be concerned with metadata like this, but a cursory
> inspection
> of what RDF covers made it look like it, too, was more concerned with
> "resources" like documents.

To clarify, the resource can be a document that contains a schema definition
or rdfs:Class which corresponds to the definition of "object". In RDF
schemas, class properties are themselves first class objects and hence can
be defined outside of the class definition, e.g. in distinct documents. URIs
are used to define types, not just instances: e.g. these statements assign
types to instances (note the instances themselves need not contain RDF):

<rdf:Description rdf:about="http://www.wherever.com/foo1_instance.xml">
	<rdf:type rdf:resource="http://example.org/foo1.rdf"/>

<rdf:Description rdf:about="http://www.wherever.com/foo2_instance.xml">
	<rdf:type rdf:resource="http://example.org/foo2.rdf"/>

Jonathan Borden
The Open Healthcare Group


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