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arXiv 0908.3957cs.DB
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利用分片技术提高XML数据仓库查询性能

Enhancing XML Data Warehouse Query Performance by Fragmentation

Hadj Mahboubi, Jérôme Darmont

摘要:

XML数据仓库为利用来自多个源的异构数据的决策支持应用程序提供了一个有趣的基础。然而,XML原生数据库系统目前遭受有限的性能方面的可管理的数据量和响应时间复杂的分析查询。分割和分发XML数据仓库(例如,在数据网格上)允许解决这两个问题。在本文中,我们工作的XML仓库碎片。在关系数据仓库中,一些研究建议使用派生的水平碎片。因此,我们建议使其适应XML上下文。我们特别关注维度XML文档的初始水平碎片,并利用两种替代算法。我们通过实验验证我们的建议,并比较这些替代品相对于一个统一的XML仓库模型,我们主张。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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