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arXiv 1406.7685cs.DB
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DataWarehouse中物化视图自维护的效率分析

Efficiency Analysis of Materialized views in DataWarehouse Using selfmaintenance

Mehwish Aziz, Shabnam Nawaz, Pakeeza Batool

摘要:

数据仓库是组织中用于分析和决策的大型数据存储库。为了提高查询性能和快速访问数据,数据被存储为物化视图(MV)在数据仓库。当源数据更新时,物化视图也需要更新。在本文中,我们专注于这些物化视图的维护问题,并解决的问题,找到这样的辅助视图(AV),连同物化视图,使数据自我维护,并采取最小的空间。我们提出了一种算法,使用关键字和引用约束,减少了辅助视图中的元组的总数,并使用这些辅助视图之间的信息共享的想法,以进一步减少辅助视图的数量。

英文摘要:

A data warehouse is a large data repository for the purpose of analysis and decision making in organizations. To improve the query performance and to get fast access to the data, data is stored as materialized views (MV) in the data warehouse. When data at source gets updated, the materialized views also need to be updated. In this paper, we focus on the problem of maintenance of these materialized views and address the issue of finding such auxiliary views (AV) that together with the materialized views make the data self-maintainable and take minimal space. We propose an algorithm that uses key and referential constraints which reduces the total number of tuples in auxiliary views and uses idea of information sharing between these auxiliary views to further reduce number of auxiliary views.

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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