Database repairing and consistent query answering

Integrity constraints are semantic conditions that a database should satisfy in order to be an appropriate model of external reality. In practice, and for many reasons, a database may not satisfy those integrity constraints, and for that reason it is said to be inconsistent. However, and most likely a large portion of the database is still semantically correct, in a sense that has to be made precise. After having provided a formal characterization of consistent data in an inconsistent database, the natural problem emerges of extracting that semantically correct data, as query answers.

Year

2011

Language

English

Series

Synthesis lectures on data management -- # 20

Publisher

Morgan & Claypool

Editions

1

Pages

105

ISBN

9781608457632

Data source: Wikidata