Notes: In order to create a child DFD diagram in the student edition, you need to explode your process (right mouse click on the process symbol, choose explode, then choose Create New Diagram). This action helps you to decompose the parent process, to promote model balancing and to maintain the integrity of the model. You should not try to create the child diagram by creating a new DFD via the File | New Diagram menu item. You need to explode your context diagram to system level diagram. In order to do that, first you have to figure out how many processes you need to have on the system level diagram. The basic requirement for the case is asking you to explode one of the processes in the No Customer Escapes Systemsto functional and detail level diagrams.
To get the extra credit, you need to explode all the processes at the system level and create functional and detail level diagrams for each of the processes. The models need to balance from one level to the next level to have a complete process model.
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