Systems analysts use CASE tools to help them plan, build. and maintain information systems.

| April 14, 2018

Systems analysts use CASE tools to help them plan, build. and maintain information systems. To learn moreabout CASE tools. tum to Part B of the Toolkit that follows Chapter 12. You can complete these tasks with theVisible Analyst® CASE tool, which is available with this textbook, or a similar tool.Background2 19You decided to start a mobile auto detailing service that will visit customers at their homes or businesses, anduse traditional, high-quality hand washing and waxing methods. In addition to retail customers, several autodealers 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 severalMicrosoft Office applications to meet your needs. She suggested that you prepare an initial context diagramand a DFD diagram 0, and not to be too concerned about the details – just the main entities, data flows, anddata 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 handlethe business. You also plan to keep track of customers, employee information, profit-sharing data, and an op·erations log, among other things.Tasks1. Create a context diagram from the new business. It is okay to use your imagination with respect to dataflows that you envision.2. Create a diagram 0 that includes at least three processes and two data stores that would be typical in asmall business of this kind. You can use your imagination with respect to the processes and data storesthat might be needed.

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