Jew Man Jew Bear

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Systems Analysis & Design Professor Oct 10th Petrie Electronics Case - Assignment 2 1. Are the DFDs in PE figures 7-1 and 7-2 balanced? Show that they are, or are not. If they are not balanced, how can they be fixed? * Both DFD’s in Petrie Electronics case in Figure 7-1 and Figure 7-2 are not balanced correctly. The figure 7-1 diagram misses the process of how the company maintains the promotions for the customer and the 7-2 diagram has way too many steps and is kind of confusing and hard to understand. Because the figure shows multiple inputs from multiple sources it makes it somewhat difficult to read. In order for the two diagram to be balanced, we will need to show the additional sources and their inputs into the system and when the 7-1 and 7-2 diagrams have the same sources-inputs-outputs, the diagrams will be balanced. 2. Decompose each of the core processes in PE Figure 7-2 and draw a new DFD for each core process. * Customer makes purchases through the company with or without a coupon > that then is fed to the customer database which sends promotions to the tailored customer * • The Marketing Database will also send promotions to target specific tailored customers as well * • The customer activity report that is generated based on the consumer’s activities generates the coupons that is send to the customer * • The product database then feeds information to generate reports of consumer behavior and also send the consumers coupons based on their trend buys 3. Has the team overlooked any core processes in the system that should be in PE Table 7-1 and PE Figure 7-2? What would they be? Add them to PE Table 7-1 and PE Figure 7-2. * One of these core processes is sending promotions using data gathered through the transaction logging. Before promotions can be sent out, they first must be generated. The

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