December 1999
SD206 : SYSTEMS DESIGN

QUESTION 2

Total Marks: 15 Marks

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SUGGESTED SOLUTIONS
for Question 2

(a)

Illustrate,using a simple example,how a system can be modelled using a data flow diagram .

 

[5]
(b)

Describe,using examples,the first two steps involved in deriving a logical model of a new system from a logical model of an existing system.

 

 [6]
(c) The first four steps necessary for developing a structure chart are:perform a transaction analysis,determine the central transform,produce a first-cut structure chart,and add modules and show data flows.Describe the final two steps involved in developing a structure chart.
 [4]