In order to ameliorate the deficiency of currently prevailing data warehouse architecture DB?DW,this paper comes up to build DB?ODS?DW three layer system construction by useing ODS(Operational Data Store).

• 针对当前流行数据仓库体系DB DW存在的不足,引入ODS,构建起DB ODS DW数据仓库三层体系结构;