Taxonomy-based relaxation of query answering in relational databases.
Davide MartinenghiRiccardo TorlonePublished in: VLDB J. (2014)
Keyphrases
- query answering
- relational databases
- data exchange
- integrity constraints
- data integration systems
- incomplete information
- data complexity
- answering queries
- data integration
- conjunctive queries
- xml documents
- databases
- database
- relational model
- object oriented
- query rewriting
- sql queries
- functional dependencies
- data dependencies
- query answers
- xml databases
- normal form
- xml data
- database schema
- dl lite
- decision support
- data management
- metadata
- inconsistent databases
- ontology based data access
- xml data exchange