Database DataWarehousing (MOSC)

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slowly changed dimenstion table

edited Oct 15, 2010 1:25AM in Database DataWarehousing (MOSC) 6 commentsAnswered ✓
 Hi All,

Let's assume we have one fact table f_table and one dimension table d_table. And certainly, f_table references d_table.

d_table looks like:

id       district name

1          BJ

2.         SH

3.         TJ

Currently, one challenge for me is that some row may merge into one row.

For example, BJ and TJ will become one district BTJ. Obviously, this chagne will dramatically influence the fact table.

Can someone give me some ideas or guide on how to design this data model to conquer this tough problem, please?

Thank you very much,

Leon

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