Enumeration Complexity of Conjunctive Queries with Functional Dependencies.
Nofar CarmeliMarkus KröllPublished in: Theory Comput. Syst. (2020)
Keyphrases
- conjunctive queries
- functional dependencies
- integrity constraints
- answering queries using views
- relational database theory
- query answering
- combined complexity
- data complexity
- conp complete
- normal form
- inclusion dependencies
- deductive databases
- relational model
- database theory
- np complete
- universal relation
- database schema
- relational databases
- query evaluation
- query rewriting
- database design
- query containment
- probabilistic databases
- data dependencies
- decision procedures
- data exchange
- query language
- datalog programs
- cardinality constraints
- decision problems
- computational complexity
- relational queries
- xml documents
- entity relationship
- object oriented
- unions of conjunctive queries
- special case
- inconsistent databases
- case study