Hypothetical Query Answering in First-Order Databases.
Juan Carlos CasamayorHendrik DeckerPublished in: SCAI (1995)
Keyphrases
- query answering
- databases
- data integration
- data exchange
- unions of conjunctive queries
- inconsistent databases
- data complexity
- data integration systems
- answering queries
- conjunctive queries
- integrity constraints
- incomplete information
- data management
- data model
- query rewriting
- schema mappings
- database
- relational databases
- data sources
- query answers
- complexity of query answering
- ontology based data access
- database systems
- dl lite
- knowledge discovery
- data warehouse
- query containment
- regular path queries
- inclusion dependencies
- consistent query answering
- decision making
- semantic web
- first order logic