Direct Access for Conjunctive Queries with Negation.
Florent CapelliOliver IrwinPublished in: CoRR (2023)
Keyphrases
- conjunctive queries
- containment of conjunctive queries
- datalog programs
- query evaluation
- query answering
- integrity constraints
- np complete
- query containment
- query language
- data complexity
- deductive databases
- decision procedures
- special case
- data exchange
- query rewriting
- probabilistic databases
- regular path queries
- conjunctive regular path queries
- unions of conjunctive queries
- schema mappings
- boolean expressions
- databases
- tuple generating dependencies
- queries using views
- fixpoint
- data integration
- logic programs
- np hard
- query processing
- relational queries
- relational databases
- data sets
- database