April
1999 QUESTION 2 Total Marks: 20 Marks |
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| (a) | (i) What is the main role of a systems analyst? | [2] |
| (ii) In addition to those required for analysis,
what skills are essential for a systems analyst in the design phrase?
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[2] | |
| (b) | (i) List three of the main aspects of structured design. | [3] |
| (ii) Draw a small example of how a system may be
modelled in terms of a data flow diagram using the four basic symbols associated with
structured design.
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[5] | |
| (c) | (i) What sort of information might be indicated by a diagram of a logical model of a system which has been marked up? | [2] |
| (ii) List two sorts of tradeoff which
might have to be dealt with in building a physical model.
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[2] | |
| (d) | (i) Define the terms hard real-time processing and soft real-time processing. | [2] |
| (ii) Describe the storage and access of records in a real-time system. | [2] |