Compilation and Approximation of Conjunctive Queries by Concept Descriptions.
François GoasdouéMarie-Christine RoussetPublished in: KRDB (2002)
Keyphrases
- conjunctive queries
- concept descriptions
- data complexity
- query answering
- inductive learning
- description logics
- ontology languages
- query evaluation
- integrity constraints
- np complete
- query language
- representation language
- concept drift
- query containment
- data exchange
- special case
- language independent
- constructive induction
- data model
- knowledge base
- answering queries
- schema mappings
- databases
- knowledge acquisition
- query processing
- data management
- relational databases