The XQueC Project: Compressing and Querying XML

Authors Andrei Arion, Angela Bonifati, Ioana Manolescu, Andrea Pugliese



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Author Details

Andrei Arion
Angela Bonifati
Ioana Manolescu
Andrea Pugliese

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Andrei Arion, Angela Bonifati, Ioana Manolescu, and Andrea Pugliese. The XQueC Project: Compressing and Querying XML. In Structure-Based Compression of Complex Massive Data. Dagstuhl Seminar Proceedings, Volume 8261, pp. 1-16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2008)
https://doi.org/10.4230/DagSemProc.08261.12

Abstract

We outline in this paper the main contributions of the XQueC project. XQueC, namely XQuery processor and Compressor, is the first compression tool to seamlessly allow XQuery queries in the compressed domain. It includes a set of data structures, that basically shred the XML document into suitable chunks linked to each other, thus disagreeing with the ’homomorphic’ principle so far adopted in previous XML compressors. According to this principle, the compressed document is homomorphic to the original document. Moreover, in order to avoid the time consumption due to compressing and decompressing intermediate query results, XQueC applies ‘lazy’ decompression by issuing the queries directly in the compressed domain.
Keywords
  • XML compression
  • Data structures
  • XQuery querying

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