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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Mapping Maintenance in XML P2P Databases
verfasst von : Dario Colazzo, Carlo Sartiani
Erschienen in: Database Programming Languages
Verlag: Springer Berlin Heidelberg
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Unstructured p2p database systems are usually characterized by the presence of
schema mappings
among peers. In these systems, the detection of
corrupted
mappings is a key problem. A corrupted mapping fails in matching the target or the source schema, hence it is not able to transform data conforming to a schema
$\mathcal{S}_i$
into data conforming to a schema
$\mathcal{S}_j$
, nor it can be used for effective query reformulation.
This paper describes a novel technique for maintaining mappings in XML p2p databases, based on a
semantic
notion of mapping correctness.