System analysis and design. | Information Systems homework help

Part 1: Answer the Module Review Questions listed below. These questions were chosen to demonstrate your understanding and help you assess your progress.

 

  1. What is the purpose of creating a logical process model and then a physical process model? What information is found on the physical DFD that is not included on the logical DFD?
  2. 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?
  3. Where does the analyst find the information needed to create a structure chart? Describe the purpose of program specification.
  4. What is the difference between structured programming and event-driven programming?

 

Part 2: Module Practice:

 

Critique the following structure chart that depicts a guest making a hotel reservation. Describe the chart in terms of fan-in, fan-out, coupling, and cohesion. Redraw the chart to improve the design.

 

(structure chart is attached)

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