Consistent Query Answers in Virtual Data Integration Systems

Abstract

When data sources are virtually integrated there is no common and centralized mechanism for maintaining global consistency. In consequence, it is likely that inconsistencies with respect to certain global integrity constraints (ICs) will occur. In this chapter we consider the problem of defining and computing those answers that are consistent wrt the global… (More)
DOI: 10.1007/978-3-540-30597-2_3

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