Extensibility (Schema)

RDF Schema Specification -- z39.19 thesaurus <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/TR/WD-rdf-schema#" > <rdfs:Class rdf:ID="ControlledVocabulary"> <rdfs:comment>The most general controlled vocabulary</rdfs:comment> </rdfs:Class> ... <rdfs:Class rdf:ID="Thesaurus"> <rdfs:subclassOf rdf:resource="#ControlledVocabulary"/> </rdfs:Class> ... <rdf:Property rdf:ID="descriptor"> <rdfs:domain rdf:resource="#Thesaurus"/> <rdfs:range rdf:resource="#Descriptor"/> </rdf:Property> <rdfs:Class rdf:ID="Term"> <rdfs:comment>Most General of Terms</rdfs:comment> </rdfs:Class> <rdf:Property rdf:ID="label"> <rdfs:domain rdf:resource="Term"/> <rdfs:range rdf:resource="http://www.w3.org/TR/WD-rdf-schema#Literal"/> </rdf:Property> ... <rdfs:Class rdf:ID="PreferredTerm"> <rdfs:subClassOf rdf:resource="Term"/> <rdfs:comment>Most General Term included in CV</rdfs:comment> </rdfs:Class> ... <rdf:Property rdf:ID="link"> <rdfs:domain rdf:resource="Term"/> <rdfs:range rdf:resource="Term"/> </rdf:Property> ... <rdfs:Class rdf:ID="Descriptor"> <rdfs:subClassOf rdf:resource="PreferredTerm"/> </rdfs:Class> ... <rdf:Property rdf:ID="bt"> <rdfs:subPropertyOf rdf:resource="link"/> <rdfs:domain rdf:resource="Descriptor"/> <rdfs:range rdf:resource="Descriptor"/> </rdf:Property> </rdf:RDF> RDF Schema Specification -- ITIS <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/TR/WD-rdf-schema#" xmlns:cv="http://ceres.ca.gov/1999/08/26-cv#" > <rdfs:Class rdf:ID="ITIS"> <rdfs:subclassOf rdf:resource="CV#ControlledVocabulary"/> </rdfs:Class> ... <rdf:Property rdf:ID="genus"> <rdfs:domain rdf:resource="#ITIS"/> <rdfs:range rdf:resource="#Genus"/> </rdf:Property> ... <rdfs:Class rdf:ID="TaxonmonicTerm"> <rdfs:subClassOf rdf:resource="CV#Term"/> <rdfs:comment>Most General of Taxonomic Terms</rdfs:comment> </rdfs:Class> <rdf:Property rdf:ID="Author"> <rdfs:subPropertyOf rdf:resource="cv:sn"/> <rdfs:domain rdf:resource="TaxonomicTerm"/> <rdfs:range rdf:resource="http://www.w3.org/TR/WD-rdf-schema#Literal"/> </rdf:Property> ... <rdfs:Class rdf:ID="Genus"> <rdfs:subClassOf rdf:resource="PreferredTerm"/> </rdfs:Class> ... <rdf:Property rdf:ID="Subfamily"> <rdfs:subPropertyOf rdf:resource="cv:bt"/> <rdfs:domain rdf:resource="Genus"/> <rdfs:range rdf:resource="Subfamily"/> </rdf:Property> </rdf:RDF>

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