Data Warehouse Purge Strategy - HELP

AndyPainter at 21h54
19
Oct
2009
Data Warehouse Purge Strategy - HELP

I'm looking at the best way to implement a purge strategy in a dimensional model. The reason to purge is that no personal data can be kept after 4 years, but the users would still want to see counts/facts by no identifying data. For example i couldn't keep a name, but i could keep the gender or employer.

Is it best to do this by depersonalising data e.g. setting certain column to NULL after a number of years, or adopting an aggrega
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19/10/2009 at 21h54 by "AndyPainter"