Assignment 6 - ETL for Simple Enterprise Data Warehouse.pdf

Customers first name customers last name employees

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customer’s first name, customer’s last name, employee’s first name etc.) are also stored. When each order is created, the products that customers ordered are checked in their current inventory in order to pr ovide accurate order’s ship date estimation. If the product’s quantity on hand is less than the quantity ordered, then additional products are requested to vendors. For each request, product id, vendor id, wholesale price and days to deliver are recorded. All vendors’ information and product’s information (i.e., vendor’s name, product’s description, and product’s retail price etc.) are also stored. The figure above shows the logical schema of Dallas WareHouse’s OLTP. The CEO of Dallas WareHouse Inc. wants a data warehouse that can capture one important business process. He is concerned with how effective his employees run their inventory operations to maximize profits. The profits come from billing customers as much as possible for each product, while lowering the cost of product purchase from vendors. To measure the effectiveness of product pricing to customers, gross profit is calculated. The product acquisition is strongly tied with the volume of products requested from vendors. For each 100 of same products shipped to Dallas WareHouse, a 50- cent reduction in wholesale price is promoted. He would like to determine the numbers of product in inventory by week, month, and year. He is also interested in how many products are in inventory on weekends, and holidays. The figure below shows tables of Dallas WareHouse’s OLAP.
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