Conjunctive Queries: Unique Characterizations and Exact Learnability.
Balder ten CateVictor DalmauPublished in: CoRR (2020)
Keyphrases
- conjunctive queries
- dnf formulas
- query answering
- tight complexity bounds
- query evaluation
- integrity constraints
- data complexity
- query language
- np complete
- decision procedures
- data exchange
- query rewriting
- special case
- query containment
- probabilistic databases
- finite automata
- regular path queries
- boolean expressions
- dl lite
- datalog programs
- conjunctive regular path queries
- bounded treewidth
- queries using views
- learning algorithm
- boolean functions
- data management
- incomplete information
- containment of conjunctive queries
- relational queries
- uniform distribution
- primary key
- functional dependencies
- query processing