oracle aide

January 4, 2015

Change velocity – for code and data

Filed under: Uncategorized — oracleaide @ 5:53 pm

It is a known practice to re-factor code by its change velocity.  Ideally, source code should be resilient to change, and volatile logic should go into a configuration layer (config files or, better, “convention over configuration”).

A similar pattern is known in the DW world. Separation of facts from dimensions is just a single use case of consolidating / grouping / separating data by their change velocity.

Slowly changing dimensions are another example. There are at least two classes of dimensions – static and slowly changing.

Are there fast changing dimensions? Do we call them facts?

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