Petrie’s Electronics Case, Chapter 5 & 6 Questions 1, 3, & 5.
1. What do you think are the sources of the information Jim and his team collected? How do you think they collected all of that information?
Jim used a series of interviews, loyal customers identified by the marketing department, and existing data systems as sources. I believe they did extensive research of vendors, competing companies, trade journals, and etc.
3. If you were looking for alternative approaches for Petrie’s customer loyalty program, where would you look for information? Where would you start? How would you know when you were done?
I would look at several sources, including vendor brochures, sales information, industry trade publications, and company websites. I would start online research to find this information. I would know when I was done when all thought of questions were answered with the information I obtained.
5. Why shouldn’t Petrie’s staff build their own unique system in-house?
From the list of requirements, it was clear that Petrie’s staff should seek outside IT consulting to build their system. It would be too expensive and time consuming, and the IT staff would have to customize the interface leaving the staff more work to do with integrating the new system.
1. Are the DFDs in PE Figures 6-1 and 6-2 balanced? Show that they are, or are not. If they are not balanced, how can they be fixed?
No they are not balanced because they do not have the same number of inputs. In order to balance the diagrams, the context diagram will need to depict the additional sources and their inputs into the system.
5. Why is it important for the team to create DFDs if they are not going to write the actual system code themselves?
It is important that the team create DFDs so that there will be a visual representation of the data flow. It will