Keyphrases
- inverse roles
- description logics
- transitive roles
- number restrictions
- exptime complete
- query answering
- expressive power
- knowledge base
- reasoning tasks
- knowledge representation
- double exponential
- data complexity
- dl lite
- pspace complete
- model checking
- semantic web
- data exchange
- first order logic
- conjunctive queries
- temporal logic
- ontology languages
- query containment
- relational databases
- database