Thursday, July 24, 2014

What are functional and non-functional requirements?

Functional requirements defines the behaviour of a system whereas non-functional requirements specify how the system should behave; in other words they specify the quality requirements and judge the behaviour of a system.
Example :
Functional - Display a chart which shows the maximum number of products sold in a region.

Non-functional – The data presented in the chart must be updated every 5 minutes.

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