RDFS

RDF Schema

extends RDF with a basic vocabular for describing classes, properties, and hierachies.

• Namespace: http://www.w3.org/2000/01/rdf-schema (prefix: rdfs:)
• Purpose: provide schema-level constructs (like a simple ontology language).
• Key terms:
  • rdfs:Class: defines a class of resources
  • rdfs:subClassOf: declares a class hierarchy
  • rdfs:subPropertyOf: declares property hierarchy
  • rdfs:label, rdfs:comment: human-readable descriptions
• Example:

dbo:Car rdfs:subClassOf dbo:Vehicle

• Links: RDFS is the foundation that OWL builds upon.