OBDA Constraints for Effective Query Answering (Extended Version).
Dag HovlandDavide LantiMartín RezkGuohui XiaoPublished in: CoRR (2016)
Keyphrases
- query answering
- data exchange
- consistency checking
- integrity constraints
- data complexity
- data integration
- conjunctive queries
- query containment
- incomplete information
- answering queries
- regular path queries
- tuple generating dependencies
- query rewriting
- multi agent
- consistent query answering
- deductive databases
- dl lite
- closed world
- databases