Direct Access for Answers to Conjunctive Queries with Aggregation.
Idan EldarNofar CarmeliBenny KimelfeldPublished in: ICDT (2024)
Keyphrases
- conjunctive queries
- queries using views
- query answering
- query evaluation
- integrity constraints
- np complete
- data complexity
- query language
- data exchange
- query rewriting
- query answers
- query containment
- decision procedures
- datalog programs
- probabilistic databases
- special case
- bounded treewidth
- containment of conjunctive queries
- boolean expressions
- schema mappings
- unions of conjunctive queries
- conjunctive query containment
- transitive closure
- dl lite
- functional dependencies
- relational queries
- consistent answers
- conp complete
- data sources