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Monthly Archives: February 2013

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Design Tip #152 Slowly Changing Dimension Types 0, 4, 5, 6 and 7

  • Margy Ross
  • February 5, 2013

Ralph introduced the concept of slowly changing dimension (SCD) attributes in 1996. Dimensional modelers, in conjunction with the business’s data governance representatives, must specify the data warehouse’s response to operational attribute value changes. Most Kimball readers are familiar with the core SCD approaches: type 1 (overwrite), type 2 (add a row), and type 3 (add […]

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