The data mart tier contains all the data marts, which are subsets of the data repository module, made simple enough for specific groups of end users to use in their data analysis activities. 数据集市层包含所有的数据集市,这些数据集市是数据存储库模块的子集,以便特定的终端用户组在其数据分析活动中使用起来足够简单。