Cuyamaca College Physical Process Model Questions
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Description
Help to solve the questions below based on the book:
1. What is the purpose of creating a logical process model
and then a physical process model?
2. What information is found on the physical DFD that is
not included on the logical DFD?
3. What are some of the system-related data elements and
data stores that may be needed on the physical DFD that
were not a part of the logical DFD?
4. What is a human–machine boundary?
5. Why is using a top-down modular approach useful in
program design?
6. Describe the primary deliverable produced during
program design. What does it include and how is it
used?
7. What is the purpose of the structure chart in program
design?
8. Where does the analyst find the information needed to
create a structure chart?
9. Distinguish between a control module, subordinate
module, and library module on a structure chart. Can a
particular module be all three? Why or why not?
10. What does a data couple depict on a structure chart? A
control couple?
11. It is preferable for a control couple to flow in one particular direction on the structure chart. Which direction
is preferred, and why?
12. What is the difference between a transaction structure
and a transform structure? Can a module be a part of
both types of structures? Why or why not?
13. What is meant by the characteristic of module cohesion?
What is its role in structure chart quality?
14. List the seven types of cohesion. Why do the various types
of cohesion range from good to bad? Give an example of
good coupling and an example of bad coupling.
15. What is meant by the characteristic of module coupling?
What is its role in structure chart quality?
16. List the seven types of coupling. Why do the various
types of coupling range from good to bad? Give an example of good coupling and an example of bad coupling.
17. What is meant by the characteristics of fan-in and fan-out? What are their roles in structure chart quality?
18. List and discuss three ways to ensure the overall quality of
a structure chart.
19. Describe the purpose of program specifications.
20. What is the difference between structured programming
and event-driven programming?
21. Is program design more or less important when using
event-driven languages such as Visual Basic?
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