摘要：
<摘自网络>BW中聚集是指根据InfoCube中几个或者一个维度信息对象创建的小的CUBE，其实是新生成一张事实表，外加一些对应的维度表，可以提供数据的访问效率。An aggregate is a roll up of fact data where a total value is sufficient and no detailed information is needed.Technically speaking,an aggregate is a separate infoCube with its own fact table and dimension tables. 阅读全文
