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Deciding between type 1 and type 2 dimensions

How do you decide where a dimension should be a Type 1 or Type 2, i.e. slowly changing. How do I explain to the exuctive board of my company the advantages and disadvantages of each type of dimension?

One of the better articles on slowly changing dimensions comes from the master of dimensional data warehousing. Ralph Kimball, please follow the link provided here to see how Ralph explains their use and their applicable uses.

http://www.dbmsmag.com/9604d05.html

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This was last published in October 2002

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