Monday 29 April 2013

Dimensional Modeling

I did a webinar on dimensional modeling today at PragmaticWorks.com.

In this webinar I covered the ten rules of Dimensional modeling from the Kimball group. Here are those rules:

1: Load detailed atomic data into dimensional structures
2: Structure dimensional models around business processes
3: Ensure that every fact table has an associated date dimension table
4: Ensure that all facts in a single fact table are at the same grain or level of detail
5: Resolve many-to-many relationships in fact tables
6: Resolve many-to-one relationships in dimension tables
7: Store report labels and filter domain values in dimension tables.
8: Make certain that dimension tables use a surrogate key
9: Create conformed dimensions to integrate data across the enterprise.
10: Continuously balance requirements and realities to deliver a DW/BI solution that’s accepted by business users and that supports their decision-making.

You can find more details in given link:
http://www.informationweek.com/software/business-intelligence/kimball-university-the-10-essential-rule/217700810

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