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12. Ontologies: RDF Business Models > 12.5. Basic Constructs of OWL

Basic Constructs of OWL

In this section, we’ll look at the basic elements of OWL, those that exist regardless of the ontology being defined. If you’re familiar with RDFS (as covered in Chapter 5), most of these should be familiar to you. Specifically, in this section we’ll cover the following OWL elements:

  • owl:Class

  • owl:Datatype

  • owl:DatatypeProperty

  • rdfs:domain

  • owl:imports

  • owl:ObjectProperty

  • owl:Ontology

  • rdf:Property

  • rdfs:range

  • rdfs:subClassOf

  • rdfs:subPropertyOf

  • owl:versionInfo

RDF Schema and OWL are compatible, which is why you’ll see RDFS elements within the OWL element set. However, the direction of this compatibility is one way — only from RDF and RDF to OWL; you won’t see OWL elements within the RDF Schema.


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