Quantified conjunctive queries on partially ordered sets.
Simone BovaRobert GanianStefan SzeiderPublished in: Theor. Comput. Sci. (2016)
Keyphrases
- conjunctive queries
- partially ordered sets
- query answering
- integrity constraints
- query evaluation
- np complete
- query language
- algebraic structures
- data complexity
- special case
- decision procedures
- query rewriting
- data exchange
- metric space
- probabilistic databases
- precedence constraints
- containment of conjunctive queries
- query containment
- dl lite
- regular path queries
- boolean expressions
- multi dimensional
- data management
- relational queries
- schema mappings
- data integration