Efficient Query Answering Through Approximation.
Edward ThomasJeff Z. PanPublished in: Description Logics (2007)
Keyphrases
- query answering
- data exchange
- incomplete information
- conjunctive queries
- data integration
- answering queries
- data complexity
- integrity constraints
- inconsistent databases
- data integration systems
- query rewriting
- error bounds
- query answers
- query containment
- xml data exchange
- data sets
- efficient computation
- knowledge management
- data model
- case study