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.
Background
Susan Park has completed a preliminary investigation and performed the fact-finding task that were described in Chapter 2 and 4. Now, she will use the result to develop a logical model of the proposed information system.
Assignments
Before you perform the following task, you should review the information provided in Chapter 2 and 4 of the case.

1. Prepare a context diagram for the new system.
2. Prepare a diagram 0 DFD for the new system.
3. prepare a brief memo that describes the importance of leveling a set of DFDs.
4. prepare a brief memo that describes the importance of balancing a set of DFDs.