December 1999
SD206 : SYSTEMS DESIGN

QUESTION 3

Total Marks: 15 Marks

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SUGGESTED SOLUTIONS
for Question 3

(a)

Flowcharts are often described as being too sequential in nature.List three characteristics of flowcharts which support this argument.

 

[3]
(b)

Give two ways in which the design of a system can be disadvantaged if flowcharts are used.

 

 [2]
(c)

Illustrate,using examples,each of the following Nassi-Schneiderman chart symbols:

(i)Sequence process.[2 marks ]

(ii)Condition decision process.[2 marks ]

(iii)Case decision process.[2 marks ]

(iv)Iteration process.[2 marks ]

 

 [8]
(d) List two drawbacks of using Nassi-Schneiderman charts.
[2]