Keyphrases
- query answering
- international conference
- data exchange
- incomplete information
- conjunctive queries
- lecture notes in artificial intelligence
- answering queries
- data complexity
- integrity constraints
- query rewriting
- data integration
- query containment
- machine learning
- international symposium
- computational intelligence
- special case
- dl lite
- query answers
- regular path queries
- data integration systems
- lecture notes
- data management
- expert systems
- database systems
- artificial intelligence