OBDA Constraints for Effective Query Answering.
Dag HovlandDavide LantiMartin RezkGuohui XiaoPublished in: RuleML (2016)
Keyphrases
- query answering
- data exchange
- incomplete information
- consistency checking
- integrity constraints
- data complexity
- conjunctive queries
- answering queries
- query containment
- data integration
- regular path queries
- schema mappings
- ontology based data access
- xml data exchange
- inconsistent databases
- query relaxation
- inclusion dependencies
- query rewriting
- dl lite
- datalog programs
- relational databases
- expressive power
- mobile robot