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Consistent query answers on numerical databases under aggregate constraints

Sergio Flesca·Filippo Furfaro·Francesco Parisi
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Abstract

The problem of extracting consistent information from relational databases violating integrity constraints on numerical data is addressed. In particular, aggregate constraints defined as linear inequalities on aggregate-sum queries on input data are considered. The notion of repair as consistent set of updates at attribute-value level is exploited, and the characterization of several complexity issues related to repairing data and computing consistent query answers is provided.

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Sergio Flesca, Filippo Furfaro, Francesco Parisi. 2005-05-23. Consistent query answers on numerical databases under aggregate constraints. https://arxiv.org/abs/cs/0505059

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