Keyphrases
- conjunctive queries
- differentially private
- query answering
- data complexity
- np complete
- data exchange
- query language
- query evaluation
- integrity constraints
- query rewriting
- acyclic conjunctive queries
- decision procedures
- special case
- probabilistic databases
- differential privacy
- boolean expressions
- query containment
- optimal solution
- tuple generating dependencies
- containment of conjunctive queries
- information retrieval
- data integration
- description logics
- data model