Query Answering by Means of Diagram Transformation.
Jaume Agustí-CullellJordi PuigsegurW. Marco SchorlemmerPublished in: FQAS (1998)
Keyphrases
- query answering
- data exchange
- data complexity
- answering queries
- incomplete information
- data integration
- integrity constraints
- conjunctive queries
- query rewriting
- data integration systems
- inconsistent databases
- query relaxation
- datalog programs
- schema mappings
- xml data exchange
- query containment
- consistent query answering