License
When quoting this document, please refer to the following
URN: urn:nbn:de:0030-drops-16924
URL: http://drops.dagstuhl.de/opus/volltexte/2008/1692/
Go to the corresponding Portal


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

Optimizing XML Compression in XQueC

pdf-format:
Document 1.pdf (218 KB)


Abstract

We present our approach to the problem of optimizing compression choices in the context of the XQueC compressed XML database system. In XQueC, data items are aggregated into containers, which are further grouped to be compressed together. This way, XQueC is able to exploit data commonalities and to perform query evaluation in the compressed domain, with the aim of improving both compression and querying performance. However, different compression algorithms have different performance and support different sets of operations in the compressed domain. Therefore, choosing how to group containers and which compression algorithm to apply to each group is a challenging issue. We address this problem through an appropriate cost model and a suitable blend of heuristics which, based on a given query workload, are capable of driving appropriate compression choices.

BibTeX - Entry

@InProceedings{arion_et_al:DSP:2008:1692,
  author =	{Andrei Arion and Angela Bonifati and Ioana Manolescu and Andrea Pugliese},
  title =	{Optimizing XML Compression in XQueC},
  booktitle =	{Structure-Based Compression of Complex Massive Data },
  year =	{2008},
  editor =	{Stefan B{\"o}ttcher and Markus Lohrey and Sebastian Maneth and Wojcieh Rytter},
  number =	{08261},
  series =	{Dagstuhl Seminar Proceedings},
  ISSN =	{1862-4405},
  publisher =	{Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, Germany},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2008/1692},
  annote =	{Keywords: XML compression}
}

Keywords: XML compression
Seminar: 08261 - Structure-Based Compression of Complex Massive Data
Issue Date: 2008
Date of publication: 20.11.2008


DROPS-Home | Fulltext Search | Imprint Published by LZI