Keyphrases
- query answering
- lecture notes
- data exchange
- computer science
- lecture notes in artificial intelligence
- data complexity
- conjunctive queries
- integrity constraints
- incomplete information
- international conference
- data integration
- query rewriting
- dl lite
- case study
- machine learning
- international symposium
- query containment
- database
- data integration systems
- international workshop
- data model
- databases