On Query Containment Problem for Conjunctive Queries Under Bag-Set Semantics.
Victor FeleaVioleta FeleaPublished in: ACIIDS (1) (2015)
Keyphrases
- query containment
- conjunctive queries
- query answering
- query evaluation
- integrity constraints
- np complete
- decision procedures
- query language
- data complexity
- data exchange
- transitive closure
- special case
- regular path queries
- query rewriting
- containment of conjunctive queries
- datalog programs
- exptime complete
- data integration
- unions of conjunctive queries
- answering queries using views
- probabilistic databases
- dl lite
- relational queries
- regular expressions
- relational databases
- data analysis
- computational complexity