Tractable Query Answering and Optimization for Extensions of Weakly-Sticky Datalog+-.
Mostafa MilaniLeopoldo E. BertossiPublished in: CoRR (2015)
Keyphrases
- query answering
- complexity of query answering
- data exchange
- data complexity
- answering queries
- integrity constraints
- data integration
- incomplete information
- datalog programs
- conjunctive queries
- inconsistent databases
- ontology based data access
- query rewriting
- query containment
- dl lite
- query evaluation
- description logics
- database
- xml data exchange
- query answers
- ontology languages
- expressive power
- decision support
- computational complexity