Question: I am working to improve a poorly designed four-year-old data mart. A lot of work from both the database and BI side has been incorporated in the data mart. We are planning to redesign the data model which will make all the reports obsolete. Would you suggest some hints/methodology to undertake this job?

Adrienne Tannenbaum's Answer: Without knowing the details of why you consider your current design to be poor, it is hard to generalize . I can assure you of one thing though - if all of the design decisions are being made within IT by IT personnel, the business may in fact consider your new result to be "poorly designed." Rule number one - remember, IT is there to serve the business. Data models should reflect what the business has, needs and wants. Start with those who will want the reports.

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