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。
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.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2006年第4期83-87,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(60172012)
关键词
数据仓库
OLAP
汇总
分类
判断方法
对策
data warehouse
OLAP
summarizability
classify
judging method
countermeasure
