Personal Trainer, Inc

Personal Trainer, Inc., owns and operates fitness centers in a dozen Midwestern cities. The centers have done

well, and the company is planning an international expansion by opening a new “supercenter” in the Toronto area.
Personal Trainer’s president, Cassia Umi, hired an IT consultant, Susan Park, to help develop an information
system for the new facility. During the project, Susan will work closely with Gray Lewis, who will manage the new
operation.

Susan Park has completed a preliminary investigation and performed the fact-finding tasks that were described in
Chapters 2 and 4. ( see below) Now, she will use the results to develop a logical model of the proposed
information system.
• Prepare a context diagram for the new system.
• Prepare a diagram 0 DFD for the new system.
• Write a brief memo that explains the importance of leveling a set of DFDs.
Write a brief memo that explains the importance of balancing a set of DFDs.
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