A general datalog-based framework for tractable query answering over ontologies.
In this paper, we introduce a family of expressive extensions of Datalog, called Datalog±, as a new paradigm for query answering over ontologies. The Datalog± family admits existentially quantified variables in rule heads, and has suitable restrictions to ensure highly efficient ontology querying. W...
| Auteurs principaux: | , , |
|---|---|
| Autres auteurs: | |
| Format: | Journal article |
| Langue: | English |
| Publié: |
ACM
2009
|