| 维度汇总性问题及其对策 |
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| 引用本文： | 陆昌辉,刘青宝,邓苏,张维明.维度汇总性问题及其对策[J].国防科技大学学报,2006,28(4):83-87. |
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| 作者姓名： | 陆昌辉 刘青宝 邓苏 张维明 |
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| 作者单位： | 国防科技大学,信息系统与管理学院,湖南,长沙,410073 |
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| 摘 要： | 在联机分析处理中,为了提高查询的响应速度,预聚合是一种常用的方法,但在已有的研究中,关于维度汇总性的研究还相当少。从维度汇总性的基本概念及其分类出发,对维度汇总性的判断方法进行了研究,最后还给出了处理维度汇总性问题时的一些对策。
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| 关 键 词： | 数据仓库 OLAP 汇总 分类 判断方法 对策 |
| 文章编号： | 1001-2486(2006)04-0083-05 |
| 收稿时间： | 2006/2/28 0:00:00 |
| 修稿时间： | 2006年2月28日 |
The Question about Dimensional Summarizability and Its Countermeasures |
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| LU Changhui,LIU Qingbao,DENG Su and ZHANG Weiming.The Question about Dimensional Summarizability and Its Countermeasures[J].Journal of National University of Defense Technology,2006,28(4):83-87. |
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| Authors: | LU Changhui LIU Qingbao DENG Su and ZHANG Weiming |
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| Institution: | College of Information System and Management, National Univ. of Defense Technology, Changsha 410073, China;College of Information System and Management, National Univ. of Defense Technology, Changsha 410073, China;College of Information System and Management, National Univ. of Defense Technology, Changsha 410073, China;College of Information System and Management, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | In OLAP application,aggregation is the usual technique to improve the response speed of the users' query.However,there have been few attempts to completely characterize the ability to summarize measures along some dimensions.Based on this situation,this paper firstly gives some basic definitions about the dimension summarizability,and represents its taxonomy.Then it describes the technique of judging the summarizability in detail,and finally,its countermeasures are introduced. |
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| Keywords: | data warehouse OLAP summarizability classify judging method countermeasure |
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