Query language-based inverses of schema mappings: semantics, computation, and closure properties
VLDB J., pp. 823-842, 2012.
InversesSchema mappingsMetadata managementClosure propertiesConjunctive queriesMore(2+)
The inversion of schema mappings has been identified as one of the fundamental operators for the development of a general framework for metadata management. During the last few years, three alternative notions of inversion for schema mappings have been proposed (Fagin-inverse (Fagin, TODS 32(4), 25:1---25:53, 2007), quasi-inverse (Fagin e...More
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