Data warehouses (DW) and business intelligence (BI) systems also utilize system life cycles. Like most life cycles, DW and BI life cycles commence with project planning, then move on to business requirements, and so on. In your post, describe at least one phase/step of the DW/BI life cycle. What are some issues that commonly arise in that given phase, and how are they best addressed?

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The selected phase of the DW/BI life cycle is “ETL Design & Development”. This step is considered crucial because “70% of the risk and effort in the DW/BI project comes from this step” (Becker , Kimball, Mundy, Ross, & Thornthwaite, 2009, p. 7)....

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