Rewriting Count Queries over DL-Lite TBoxes with Number Restrictions.
Diego CalvaneseJulien CormanDavide LantiSimon RazniewskiPublished in: Description Logics (2020)
Keyphrases
- dl lite
- query rewriting
- conjunctive queries
- number restrictions
- unions of conjunctive queries
- query answering
- description logics
- query evaluation
- query optimization
- data complexity
- query language
- probabilistic databases
- query containment
- tree patterns
- spatial databases
- xpath queries
- answering queries
- query execution
- data exchange
- data integration
- query processing
- special case
- expressive power
- xml queries
- complex queries
- integrity constraints
- query result
- datalog programs
- data sources
- database
- cost model
- deductive databases
- first order logic