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Inverting Schema Mappings

... of interest arises when S is the class of all instances, in which case an S-inverse is a global inverse. We focus on the important ... we show how to construct an S-inverse when one exists. In particular, we show how to construct a global inverse when one exists. ...

Publication - cat - 04/16/2013 - 18:27 - 0 comments - 1 attachment

The recovery of a schema mapping: bringing exchanged data back

... and recover the initial data, or at least part of it. In fact, it would be desirable to find a reverse schema mapping from target to ... that specifies how to bring the exchanged data back. In this article, we introduce the notion of a recovery of a schema mapping: it ...

Publication - cat - 04/16/2013 - 05:49 - 0 comments - 1 attachment