Generalizing Conjunctive Queries for Informative Answers.
Katsumi InoueLena WiesePublished in: FQAS (2011)
Keyphrases
- conjunctive queries
- queries using views
- query answering
- query evaluation
- integrity constraints
- data complexity
- query answers
- np complete
- query language
- data exchange
- probabilistic databases
- query rewriting
- special case
- datalog programs
- decision procedures
- query containment
- containment of conjunctive queries
- conjunctive query containment
- unions of conjunctive queries
- dl lite
- query processing
- relational queries
- schema mappings
- tree patterns
- data mining