Multidimensional data model is the key technology of OLAP.
多维数据模型是联机分析处理技术的核心。
This paper defines an extended multidimensional data model.
提出了扩展多维数据模型。
According to the structural characteristic of multidimensional data model and OLAP's needs, a various granularity storage method has been presented to store historical data.
文中根据多维数据模型的结构特点以及OLAP需求提出了一种变粒度存储策略。
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