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基于大数据分析的分布式MOLAP技术研究
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作者 姜技 《无线互联科技》 2020年第8期163-164,共2页
在计算机系统运行以及研究环节中,会存在大量的规模效应,此类状况难以避免,要想有效解决此类问题,就需要利用分布式的处理方式,开展对文件系统的分析。文章对分布式多维联机分析过程(MOLAP)的数据模型进行了分析,从维编码的算法、映射归... 在计算机系统运行以及研究环节中,会存在大量的规模效应,此类状况难以避免,要想有效解决此类问题,就需要利用分布式的处理方式,开展对文件系统的分析。文章对分布式多维联机分析过程(MOLAP)的数据模型进行了分析,从维编码的算法、映射归约(MapReduce)算法的实现、分析维的遍历算法等方面作深入探讨。 展开更多
关键词 分布式处理 多维联机分析过程 编码算法
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The Proposal of Data Warehouse Validation
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作者 Pavol Tanuska Michal Kebisek +1 位作者 Oliver Moravcik Pavel Vazan 《Computer Technology and Application》 2011年第8期650-657,共8页
The analysis of relevant standards and guidelines proved the lack of information on actions and activities concerning data warehouse testing. The absence of the complex data warehouse testing methodology seems to be c... The analysis of relevant standards and guidelines proved the lack of information on actions and activities concerning data warehouse testing. The absence of the complex data warehouse testing methodology seems to be crucial particularly in the phase of the data warehouse implementation. The aim of this article is to suggest basic data warehouse testing activities as a final part of data warehouse testing methodology. The testing activities that must be implemented in the process of the data warehouse testing can be split into four logical units regarding the multidimensional database testing, data pump testing, metadata and OLAP (Online Analytical Processing) testing. Between main testing activities can be included: revision of the multidimensional database scheme, optimizing of fact tables number, problem of data explosion, testing for correctness of aggregation and summation of data etc. 展开更多
关键词 Data warehouse test case testing activities METHODOLOGY VALIDATION UML (unified modeling language).
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