August 1999
SD206 : SYSTEMS DESIGN

QUESTION 4

Total Marks: 20 Marks

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SUGGESTED SOLUTIONS
for Question 4
(a) In the context of CASE, describe each of the following terms:

(i) Front-end tools.

(ii) Back-end tools.

(iii) Integrated tools.

 

  

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(b) What are the differences between high-level and low level specifications?

 

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(c) (i) CASE tools provide facilities for error checking. List two types of error checking for diagramming system specifications.

(ii) As well as error checking, interactive diagramming offers a number of advantages. Name two such advantages.

 

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(d) (i) In the context of CASE, what is an information repository?

(ii) Give two reasons why an information repository is a broader concept than a data dictionary.

 

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(e) Give four reasons why the use of CASE technology does not always guarantee success.

 

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