Keyphrases
- conjunctive queries
- differentially private
- query answering
- data complexity
- query evaluation
- integrity constraints
- query language
- np complete
- data exchange
- special case
- probabilistic databases
- query rewriting
- dl lite
- optimal solution
- differential privacy
- boolean expressions
- computational complexity
- query containment
- decision procedures
- expressive power
- data integration
- containment of conjunctive queries
- acyclic conjunctive queries