Exam-style question
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Describe how defining a problem, establishing requirements, creating a data model and using abstraction can contribute to the analysis of a proposed system. You may also refer to prototyping or an agile approach.
Model answer
What a good answer should say
- The problem is first defined so that the purpose and boundaries of the proposed solution are understood.
- The requirements are then established by interacting with the intended users, identifying what the system must provide.
- A data model can represent the data relevant to the system and help organise the information that the system will need.
- Abstraction can be used to model important aspects of the external world while leaving out unnecessary detail, making the problem more manageable in a program.
Explanation
Why this works
A complete response shows how the analysis activities relate to one another rather than listing them without explanation. It should mention defining the problem, user interaction for requirements, creating a data model and using abstraction.
Reference to prototyping or an agile approach is valid as an additional way of clarifying requirements.
Common mistake
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