Query Answering in Expressive Variants of DL-Lite.
Alessandro ArtaleDiego CalvaneseRoman KontchakovMichael ZakharyaschevPublished in: SEBD (2007)
Keyphrases
- query answering
- dl lite
- tight complexity bounds
- data exchange
- data complexity
- conjunctive queries
- answering queries
- integrity constraints
- data integration
- incomplete information
- description logics
- complexity of query answering
- conjunctive query answering
- query rewriting
- inconsistent databases
- first order logic
- query containment
- ontology based data access
- databases
- datalog programs
- data sets
- expert systems
- data mining
- artificial intelligence
- schema mappings
- decision procedures
- ontology languages
- unions of conjunctive queries
- database
- tuple generating dependencies
- computational complexity
- data warehouse