Assigning Function to CDS Through Qualified Query Answering: Beyond Alignment and Motifs.
Terry GaasterlandNatalia MaltsevJorge LoboGuo-Hua ChenPublished in: ISMB (1994)
Keyphrases
- query answering
- data exchange
- conjunctive queries
- answering queries
- data complexity
- incomplete information
- data integration
- integrity constraints
- data integration systems
- query rewriting
- xml data exchange
- query answers
- schema mappings
- datalog programs
- decision making
- query relaxation
- query evaluation
- data management
- data sources
- special case
- database systems
- regular path queries
- magic sets
- data sets