Enhancing XML data warehouse query performance by fragmentation

Hadj Mahboubi, Jérôme Darmont
2009 Proceedings of the 2009 ACM symposium on Applied Computing - SAC '09  
XML data warehouses form an interesting basis for decisionsupport 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
more » ... 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.
doi:10.1145/1529282.1529630 dblp:conf/sac/MahboubiD09 fatcat:2khly6tcqrawnpfiinalt2nvbm