System Analysis and Design

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)

 

End of Module Questions – Part 2

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.

(

1

RESERVE
ROOM
)

(
Hotel
Full
) (
Reservation Record
) (
Preference Record
) (
Guest
ID
) (
Updated Customer Record
) (
1.1
LOCATE AVAILABLE ROOM
) (
1.2
READ
GUEST
RECORD
) (
1.3
ASSIGN ROOM AND PREFERENCE INTO
) (
1.4
WRITE UPDATED CUSTOMER RECORD
) (
1.5.1
WRITE
NEW RESERVATION
) (
1.5.2
PRINT RESERVATION
CONFIRMATION
) (
1.2.1
EDIT NEW
GUEST
RECORD
) (
1.2.2
EDIT OLD
GUEST
RECORD
) (
1.5
OUTPUT RESERVATION
) (
Date
) (
New Guest Record
) (
Old Guest Record
) (
Updated Reservation Record
)

1