Consistent query answers on numerical databases under aggregate constraints

Details Consistent query answers on numerical databases under aggregate constraints Consistent query answers on numerical databases under aggregate constraints

2005-05-23

arxiv.org/abs/cs/0505059v1

Computer Science

Databases

Scientific paper

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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