Extending Weakly-Sticky Datalog+/-: Query-Answering Tractability and Optimizations.
Mostafa MilaniLeopoldo E. BertossiPublished in: CoRR (2016)
Keyphrases
- query answering
- data exchange
- data complexity
- data integration
- conjunctive queries
- answering queries
- integrity constraints
- incomplete information
- ontology based data access
- datalog programs
- inconsistent databases
- query rewriting
- computational complexity
- tuple generating dependencies
- query answers
- np complete
- data management
- database
- xml data exchange
- combined complexity
- unions of conjunctive queries
- query containment
- data sources
- multi agent