Browsing All posts tagged under »Slowly Changing Dimension«

Process Modeling – Is this a fact or a dimension?

November 23, 2011

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This is a question I see a lot on forums (and also get asked) and it’s generally based on confusion around events and processes (such as an incident, a bank application process etc). Let’s remember what the difference is between a fact and a dimension. A fact table stores a business process.  A fact is therefore an […]

Tracking History with Slowly Changing Dimensions

September 24, 2011

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In this post I’d like to show a few of the different ways to maintain history. As anyone who has been in data-warehousing for a while can attest to, the two most common scenarios that business users want to see are the data as it was (Kimball Slowly Changing Dimension Type 2) , or as-is […]