Search: in, Arenas, M

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XML data exchange: consistency and query answering

... Venue:  In Proceedings of the Symposium on Principles of Database Systems (PODS), pages ... have recently been investigated for relational data.In this paper, we start looking into the basic properties of XML data exchange, ...

Publication - hartung - 04/16/2013 - 22:16 - 0 comments - 1 attachment

Mapping Data in Peer-to-Peer Systems: Semantics and Algorithmic Issues

... KB We consider the problem of mapping data in peer-topeer data-sharing systems. Such systems often rely on the use of ... of corresponding values to search for data residing in different peers. In this paper, we address semantic and algorithmic issues ...

Publication - Anonymous - 04/16/2013 - 16:05 - 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

Inverting Schema Mappings: Bridging the Gap between Theory and Practice

... of a general framework for metadata management. In fact, during the last years three alternative notions of inversion for ... practical applicability. First, these algorithms work in exponential time and produce inverse mappings of exponential size. Second, ...

Publication - hartung - 04/15/2013 - 23:38 - 0 comments - 1 attachment