Efficient Query Answering in the Representative Instance Approach.
Paolo AtzeniEdward P. F. ChanPublished in: PODS (1985)
Keyphrases
- query answering
- data exchange
- data integration
- incomplete information
- data complexity
- integrity constraints
- answering queries
- conjunctive queries
- data integration systems
- tuple generating dependencies
- xml data exchange
- database
- ontology based data access
- query relaxation
- query rewriting
- schema mappings
- knowledge discovery
- computational complexity
- multi agent systems
- natural language
- multi agent
- database systems
- knowledge base