You decided to start a mobile auto detailing service that will visit customers at their homes or businesses, and use traditional, high-quality hand washing and waxing methods. In addition to retail customers, several auto dealers have expressed interest in your services, and you are eager to get started. You plan to hire college stu dents as technicians, train and supply them, and offer them a share of the profits as an incentive. Your friend, who is an IT major, offered to help you set up an information system by customizing several Microsoft Office applications to meet your needs. She suggested that you prepare an initial context diagram and a DFD diagram 0, and not to be too concerned about the details - just the main entities, data flows, and data stores. Thinking it over, you know that you will have employees, retail customers, auto dealer accounts, one or more suppliers, and your local bank, where you plan to set up a business checking account to handle the business. You also plan to keep track of customers, employee information, profit-sharing data, and an op erations log, among other things.