我正在尝试使用 BI 工具对未根据工具期望的星型模式模型设计的数据库进行数据分析。有没有办法将现有的数据库或至少一部分将一些表转换为星型模式模型？
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There are basically two ways:
Create views (as already suggested) or use a 'metadata' layer (like a business objects universe or Cognos package) over the top to make it look like a star schema. This is horribly slow though.
Batch load it into a star schema warehouse
What is the business issue? Too slow? too difficult to work out what to join? Not enough built in business logic (KPI's, YTD's etc.) Star schemas solve both these problems, but method one is almost always slow and complex. Method 2 is much faster but possibly more complex to implement.
于 2013-08-23T07:59:10.910 回答