Representation of Partial Knowledge and Query Answering in Locally Complete Databases.
Alvaro Cortés-CalabuigMarc DeneckerOfer ArieliMaurice BruynooghePublished in: LPAR (2006)
Keyphrases
- query answering
- partial knowledge
- databases
- data integration
- data exchange
- conjunctive queries
- integrity constraints
- data complexity
- inconsistent databases
- answering queries
- data integration systems
- incomplete information
- database
- data management
- relational databases
- knowledge discovery
- data model
- query rewriting
- query relaxation
- data sources
- datalog programs
- machine learning
- inclusion dependencies
- closed world
- complexity of query answering
- regular path queries
- ontology languages
- state space
- database systems
- data sets