In this paper,the concepts of data warehouse,data mart,metadata, OLAP are introduced and three implementation strategies of data warehouse,two methods of OLAP are analyzed and compared.

• 主要介绍了数据仓库、数据集市、元数据、联机分析处理的概念 ,分析并比较了建立数据仓库的三种策略以及联机分析处理技术OLAP的两种方法ROLAP和MOLAP