Range-Consistent Answers of Aggregate Queries under Aggregate Constraints
Identifieur interne : 000617 ( Main/Exploration ); précédent : 000616; suivant : 000618Range-Consistent Answers of Aggregate Queries under Aggregate Constraints
Auteurs : Sergio Flesca [Italie] ; Filippo Furfaro [Italie] ; Francesco Parisi [Italie]Source :
- Lecture Notes in Computer Science [ 0302-9743 ] ; 2010.
Abstract
Abstract: A framework for computing range-consistent answers of aggregate queries in the presence of aggregate constraints is introduced. The range-consistent answer of an aggregate query is the narrowest interval containing all the answers of the query evaluated on every possible repaired database. A wide form of aggregate constraints is considered, consisting of linear inequalities on aggregate-sum functions. In this setting, three types of aggregate queries are investigated, namely SUM, MIN, MAX queries. Our approach computes consistent answers by solving Integer Linear Programming (ILP) problem instances, thus enabling well-established techniques for ILP resolution to be exploited.
Url:
DOI: 10.1007/978-3-642-15951-0_19
Affiliations:
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The range-consistent answer of an aggregate query is the narrowest interval containing all the answers of the query evaluated on every possible repaired database. A wide form of aggregate constraints is considered, consisting of linear inequalities on aggregate-sum functions. In this setting, three types of aggregate queries are investigated, namely SUM, MIN, MAX queries. 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