基于时间区间查询的物化视图选择策略  

A strategy of materializing views based on queries of period of time

作　　者：林连冬[1] 

机构地区：[1]黑龙江大学电子工程学院,哈尔滨150080

出　　处：《黑龙江大学自然科学学报》2011年第6期890-894,共5页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省教育厅电子工程重点实验室资助项目(DZZD20100035)

摘　　要：物化视图选择策略是数据仓库中有效降低查询响应时间的方法,现有的策略主要集中在物化视图的动态更新方法和其初始选取策略。针对某时间段内查询进行物化视图更新的情况考虑不足。在贪心算法以及动态更新算法的基础上,提出了基于时间段内查询的物化视图更新策略。An effective method to reduce the time of response time about query is to materialize views in data warehouse. Current strategies mainly consider the methods of the primary selection of materialized views and the methods of dynamic refreshment. To the refreshment of views based on queries of period of time, that＇ s insufficient. Based on the greedy algorithm and the dynamic refreshment algorithm, addressing a method of materializing views based on queries of period of time.

关 键 词：数据仓库 实视图 缓冲 更新 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]