: Query-Answering Tractability and Optimizations.
Mostafa MilaniLeopoldo E. BertossiPublished in: RR (2016)
Keyphrases
- query answering
- data exchange
- integrity constraints
- conjunctive queries
- data complexity
- answering queries
- data integration
- incomplete information
- computational complexity
- query answers
- np complete
- query rewriting
- inconsistent databases
- data integration systems
- ontology based data access
- dl lite
- datalog programs
- data management
- ontology languages
- xml documents
- case study
- open world
- databases