3 OWL Concepts

You should understand key concepts related to the support for a subset of the Web Ontology Language (OWL).

This chapter builds on the information in RDF Graph Overview, and it assumes that you are familiar with the major concepts associated with OWL, such as ontologies, properties, and relationships. For detailed information about OWL, see the OWL Web Ontology Language Reference at http://www.w3.org/TR/owl-ref/.

• Ontologies
  An ontology is a shared conceptualization of knowledge in a particular domain.
• Using OWL Inferencing
  You can use inference rules to perform native OWL inferencing.
• Using Semantic Operators to Query Relational Data
  You can use semantic operators to query relational data in an ontology-assisted manner, based on the semantic relationship between the data in a table column and terms in an ontology.