Efficient Query Answering on Stratified Databases.
Jean-Marc KerisitJean-Marc PuginPublished in: FGCS (1988)
Keyphrases
- query answering
- databases
- data integration
- data exchange
- inconsistent databases
- data complexity
- conjunctive queries
- database
- data integration systems
- integrity constraints
- answering queries
- incomplete information
- relational databases
- xml data exchange
- query relaxation
- query containment
- knowledge discovery
- data sources
- query rewriting
- case study
- database systems
- knowledge base
- schema mappings
- first order logic
- data management