Evaluate your level-0 DFD from Problem and Exercise 7-32 using the rules for drawing DFDs in this chapter. Edit your DFD so that it does not break any of these rules.

Problem and Exercise 7-32

Choose a transaction that you are likely to encounter, perhaps ordering a cap and gown for graduation, and develop a high-level DFD or a context diagram. Decompose this to a level-0 diagram.