摘要
数据仓库是一个集成了多个分布式、自治或异构数据源上的信息的数据储藏室,以支持用户的查询和分析。该文介绍了DM3数据仓库实现多数据源实化视图一致性维护的策略,分析了产生视图不一致性的原因和解决办法,以及改进后的一致性维护算法:Strobe算法和T-Strobe算法。
A warehouse is a data repository containing integrated information from multiple,autonomous,heterogeneous source for efficient querying and analysis.This paper firstly introduces the strategy for multi-source warehouse consisten-cy in DM3and then analyzes the cause of inconsistencies that may arise and also bring forward some possible solu-tions.Finally it discusses the improved consistency algorithms :Strobeand T-Strobe.
出处
《计算机工程与应用》
CSCD
北大核心
2002年第1期211-213,共3页
Computer Engineering and Applications
关键词
数据仓库
数据一致性
视图维护
实化视图
data warehouse,data consistency,view maintenance,materialized views
