深入探讨数据仓库缓慢变化维的解决方案
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资料简介：
Dimension is a term in data management and data warehousing that refers to logical groupings of data such as geographical location, customer information, or product information.
Slowly Changing Dimensions (SCD) are dimensions that have data that slowly changes.
大意是说数据会发生缓慢变化的维度就叫”缓慢变化维”。
举个例子就清楚了：
Slowly Changing Dimensions (SCD) are dimensions that have data that slowly changes.
大意是说数据会发生缓慢变化的维度就叫”缓慢变化维”。
举个例子就清楚了：
2011-03-03
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