DM3多数据源数据仓库的一致性维护算法研究

RESEARCH OF ALGORITHMS FOR DM3 MULTI-SOURCE WAREHOUSE CONSISTENCY

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 .本文介绍了 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-

A warehouse is a data repository containing integrated information from multiple,autonomous,heterogeneous source for efficient querying and analysis.In this paper we first introduce the strategy for multisource warehouse consistency in DM3 and then analyze the cause of inconsistencies that may arise and also bring forward some possible solutions.Finally we discuss the improved consistency algorithms:Strobe * and T Strobe *.