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Resource Description Framework
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===Vocabulary=== The vocabulary defined by the RDF specification is as follows:<ref name="rdfschema">{{cite web|url=http://www.w3.org/TR/rdf-schema/|title=RDF Vocabulary Description Language 1.0: RDF Schema|publisher=[[W3C]]|date=2004-02-10|access-date=2011-01-05}}</ref> ====Classes==== ===== rdf ===== ; {{code|rdf:XMLLiteral}} : the class of XML literal values ; {{code|rdf:Property}} : the class of properties ; {{code|rdf:Statement}} : the class of RDF statements ; {{code|rdf:Alt}}, {{code|rdf:Bag}}, {{code|rdf:Seq}} : containers of alternatives, unordered containers, and ordered containers (<code>rdfs:Container</code> is a super-class of the three) ; {{code|rdf:List}} : the class of RDF Lists ; {{code|rdf:nil}} : an instance of <code>rdf:List</code> representing the empty list ===== rdfs ===== ; {{code|rdfs:Resource}} : the class resource, everything ; {{code|rdfs:Literal}} : the class of literal values, e.g. [[string literal|string]]s and [[integer]]s ; {{code|rdfs:Class}} : the class of classes ; {{code|rdfs:Datatype}} : the class of RDF datatypes ; {{code|rdfs:Container}} : the class of RDF containers ; {{code|rdfs:ContainerMembershipProperty}} : the class of container membership properties, <code>rdf:_1</code>, <code>rdf:_2</code>, ..., all of which are sub-properties of <code>rdfs:member</code> ====Properties==== =====rdf===== ; {{code|rdf:type}} : an instance of <code>rdf:Property</code> used to state that a resource is an instance of a class ; {{code|rdf:first}} : the first item in the subject RDF list ; {{code|rdf:rest}} : the rest of the subject RDF list after <code>rdf:first</code> ; {{code|rdf:value}} : idiomatic property used for structured values ; {{code|rdf:subject}} : the subject of the RDF statement ; {{code|rdf:predicate}} : the predicate of the RDF statement ; {{code|rdf:object}} : the object of the RDF statement <code>rdf:Statement</code>, <code>rdf:subject</code>, <code>rdf:predicate</code>, <code>rdf:object</code> are used for [[reification (knowledge representation)|reification]] (see [[#Statement reification and context|below]]). =====rdfs===== ; {{code|rdfs:subClassOf}} : the subject is a subclass of a class ; {{code|rdfs:subPropertyOf}} : the subject is a subproperty of a property ; {{code|rdfs:domain}} : a domain of the subject property ; {{code|rdfs:range}} : a range of the subject property ; {{code|rdfs:label}} : a human-readable name for the subject ; {{code|rdfs:comment}} : a description of the subject resource ; {{code|rdfs:member}} : a member of the subject resource ; {{code|rdfs:seeAlso}} : further information about the subject resource ; {{code|rdfs:isDefinedBy}} : the definition of the subject resource This vocabulary is used as a foundation for [[RDF Schema]], where it is extended.
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