Publications of Jérôme Darmont
Reference (inproceedings)
H. Mahboubi, J. Darmont, "Enhancing XML Data Warehouse Query Performance by Fragmentation", 24th Annual ACM Symposium on Applied Computing (SAC 09), Hawaii, USA, March 2009, 1555-1562; ACM, New York.
Abstract
XML data warehouses form an interesting basis for decision-support
applications that exploit heterogeneous data from multiple sources.
However, XML-native database systems currently suffer from limited
performances in terms of manageable data volume and response time
for complex analytical queries. Fragmenting and distributing XML
data warehouses (e.g., on data grids) allow to address both these
issues. In this paper, we work on XML warehouse fragmentation. In
relational data warehouses, several studies recommend the use of
derived horizontal fragmentation. Hence, we propose to adapt it to
the XML context. We particularly focus on the initial horizontal
fragmentation of dimensions' XML documents and exploit two
alternative algorithms. We experimentally validate our proposal and
compare these alternatives with respect to a unified XML warehouse
model we advocate for.
Keywords
XML data warehouses, Multidimensional model, XML-native databases, Performance, Fragmentation
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