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9 marksSystems Analysis and Design

CAPE Computer Science Unit 2 · 2013 · Paper 2 · Question 4(a)

State THREE traditional methods of determining requirements of a new software system, identifying ONE advantage and ONE disadvantage of each method.

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  1. 4(b)(i)State the purpose of external entities, data stores, and processes when used in a Data Flow Diagram (DFD).[3 marks]
  2. 4(b)(ii)For external entities, data stores, and processes, give a diagram showing how each symbol is used in a DFD.[3 marks]
  3. 4(b)(iii)Draw a level-0 data flow diagram for the scenario where a customer sends an order, the system checks inventory, sends shipping notices to warehouse for…[6 marks]
  4. 4(c)Distinguish between 'functional requirements' and 'non-functional requirements', providing ONE example of each type.[4 marks]

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