New Expressive Languages for Ontological Query Answering.
Andrea CalìGeorg GottlobAndreas PierisPublished in: AAAI (2011)
Keyphrases
- query answering
- data exchange
- regular path queries
- data complexity
- tight complexity bounds
- conjunctive queries
- combined complexity
- answering queries
- incomplete information
- integrity constraints
- data integration
- query rewriting
- expressive power
- schema mappings
- data integration systems
- dl lite
- conceptual modeling
- databases
- knowledge representation
- datalog programs
- inconsistent databases
- multi agent systems
- data model
- query containment
- relational databases
- query answers
- data mining
- regular expressions
- deductive databases
- query relaxation
- closed world assumption
- ontology based data access