Resource Description Framework (RDF)

Knowledge Systems Laboratory, Stanford University

RDF-S Constraints

uDomain and range specification on properties

uExamples:

<rdf:Description ID = "registeredTo">

<rdf:type resource = “www.w3.org/ … rdf-syntax-ns#Property” />

<rdfs:domain rdf:resource = “#MotorVehicle” />

<rdfs:range rdf:resource = “#Person” />

</rdf:Description>

<rdf:Description ID = "rearSeatLegRoom">

<rdf:type resource = “www.w3.org/ … rdf-syntax-ns#Property” />

<rdfs:domain rdf:resource = “#PassengerVehicle” />

<rdfs:domain rdf:resource = “#Minivan” />

<rdfs:range rdf:resource = “www.w3.org/datatypes#Number” />

</rdf:Description>