Ontological query answering under many-valued group preferences in Datalog+/-.
Bettina FazzingaThomas LukasiewiczMaria Vanina MartinezGerardo I. SimariOana Tifrea-MarciuskaPublished in: Int. J. Approx. Reason. (2018)
Keyphrases
- query answering
- data exchange
- integrity constraints
- conjunctive queries
- incomplete information
- ontology based data access
- data complexity
- datalog programs
- answering queries
- data integration
- query rewriting
- dl lite
- knowledge representation
- inconsistent databases
- query answers
- tuple generating dependencies
- query optimization
- decision making
- query containment
- special case