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Consider the following ER Diagram for the OLTP database you designed from Home Warranty Corporation in the Case Project for Module 11. Your design may

Consider the following ER Diagram for the OLTP database you designed from Home Warranty Corporation in the Case Project for Module 11. Your design may have differed from the one below, but this is the design that HWC decided to use. HWC has decided to develop a Data Wareshouse so that they can analyze costs to assist in making a number of business decisions. For example, they want to determine if certain customers are costing more because they may be too hard on their appliances or if certains applicances that they cover tend to break down more than others, thus incurring more cost. Your task is to design the database for the Data Warehouse. The business managers have asked for the ability to see costs by customer, appliance, employee, and by various date variables including date, week, quarter, year, day of the week, and season. The need to see this cost information for every Service Call and need know the labor cost, material cost, and sum of both.

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