Optimal Broadcasting Strategies for Conjunctive Queries over Distributed Data.
Bas KetsmanFrank NevenPublished in: ICDT (2015)
Keyphrases
- distributed data
- conjunctive queries
- query answering
- query evaluation
- integrity constraints
- data sharing
- data complexity
- query language
- query rewriting
- data exchange
- np complete
- special case
- probabilistic databases
- data distribution
- communication cost
- boolean expressions
- containment of conjunctive queries
- query containment
- databases
- decision procedures
- incomplete information
- data mining algorithms
- knowledge base
- data mining