在设计维度表时，需要计划变更维度数据。
As you're designing your dimension table, you need to plan for changing dimensional data.
如果其目标是执行多维数据分析，那么维度数据模型就是这里的惟一选择。
If the objective is to perform multidimensional data analysis, a dimensional data model would be the only choice here.
查询模型定义维度选择、边界、立方体视图以及维度数据的聚合与操纵等概念。
The query model defines the concepts of dimension selections, edges, cube views, and the aggregations and manipulations of dimensional data.
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