Week 7: DFD Hierarchies + PIECES Table 2 BTM 481
The success of the pedagogy used in this course depends on you coming to class prepared. Let’s make it a successful one!
Week 6 Recap
DFD Hierarchies
How to Prepare…
1. Review the Marchon Eyewear Case in the C/P Exercises file
2. Critically review Marchon Eyewear (Customer Orders Subsystem – P1.0)
DFD posted in Week 7
3. Develop the DFDs of subsystems 2 and 3 separately and independently of
each other. Do not look at the solution posted before you try this on your own. It is very important that you complete this task before watching the video
Compare your solutions to the ones posted for both P2.0 and P3.0 …
4. Compare DFDs you developed to those posted in Week 7 and take notes of differences between the two
5. Bring your notes to Q&A in class
Why are there differences in your solution and those posted?
Watch DFD Hierarchies Video
Outline and timeline:
1. Introductions and preparation for the video ends @ 2:29 minutes
2. Overview of hierarchies starts @2:20minutes
3. How hierarchies are developed and presented starts @5:10 min.
4. System level DFD starts @ 6:47
5. Hierarchy of DFDs starts @ 9:15 min.
6. Moving from system level DFD to level-1
and level-2 DFDs starts @ 32:02
7. Balancing starts @ 43:50 min.
DFD Hierarchy Video Q&A
Mini Marche
Open Road Insurance
IRS
PIECES Table 2
Reminder about the tasks in the 2nd phase of the project…
PIECES Table 2 cont’d
Next Week…
1. Project DFD Support Session: objective is to lead you to the final revision of current system DFD
2. CMS Visit