Build the First Star Schema Mart
Use dimensional-modeling basics to define a Snowflake fact table grain, measures, and dimensions.
The sales team joins eight raw tables in every dashboard. Two dashboards disagree on net revenue by 6.4%, and no one can tell which join path is official. Kimball dimensional modeling: choose the business process, declare the grain, identify facts, attach descriptive dimensions, and publish a business-facing mart. The common shortcut is to apply a broad fix first, then search for evidence after the fact. That reverses the learning loop and makes cost, access, or quality debt harder to see. Business process Pick completed order line as the process. A mart starts with a business event, not with whatever raw…
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