Answering Conjunctive Queries under Updates.
Christoph BerkholzJens KeppelerNicole SchweikardtPublished in: CoRR (2017)
Keyphrases
- conjunctive queries
- query answering
- data exchange
- data complexity
- integrity constraints
- query evaluation
- answering queries
- decision procedures
- incomplete information
- query containment
- query rewriting
- query language
- np complete
- data integration
- dl lite
- probabilistic databases
- datalog programs
- unions of conjunctive queries
- special case
- regular path queries
- boolean expressions
- queries using views
- data sets
- update operations
- deductive databases
- schema mappings
- bounded treewidth
- tuple generating dependencies
- containment of conjunctive queries
- database
- complexity of query answering