August 1999
SD206 : SYSTEMS DESIGN

QUESTION 3

Total Marks: 20 Marks

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SUGGESTED SOLUTIONS
for Question 3
(a) Describe each of the following type of file:

(i) History file.

(ii) Transaction file.

(iii) Security file.

(iv) Work file.

 

  

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(b) (i) What are access controls?

(ii) List three access controls which might be considered during the design of a system.

 

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(c) (i) Describe two types of file controls which are direct concern to a systems analyst.

(ii) Describe two effective methods for maintaining backup copies of files.

 

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