The Weisfeiler-Leman Dimension of Existential Conjunctive Queries.
Andreas GöbelLeslie Ann GoldbergMarc RothPublished in: CoRR (2023)
Keyphrases
- conjunctive queries
- query answering
- dl lite
- data exchange
- integrity constraints
- query evaluation
- data complexity
- data integration
- query rewriting
- np complete
- answering queries
- decision procedures
- incomplete information
- special case
- query language
- query containment
- probabilistic databases
- regular path queries
- boolean expressions
- datalog programs
- unions of conjunctive queries
- tuple generating dependencies
- expressive power
- data management
- data model
- relational queries
- hypertree decomposition