Sammy Define is a manager for a small distribution company. The business is growing fast, and Sammy recognizes that it is time to manage the vast information pool to help guide the accelerating growth. Sammy, who is familiar with spreadsheet software, currently employs a sales force of four people. He asks you to develop a data warehouse application prototype that will enable him to study sales figures by year, district, salesperson, and item. (This prototype is to be used as the basis for a future data warehouse database.)