Software Requirements - Ian Sommerville
Software Requirements - Ian Sommerville
Software Requirements - Ian Sommerville
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Examples●●A system goal• The system should be easy to use by experienced controllersand should be organised in such a way that user errors areminimised.A verifiable non-functional requirement• Experienced controllers shall be able to use all the systemfunctions after a total of two hours training. After this training,the average number of errors made by experienced users shallnot exceed two per day.©<strong>Ian</strong> <strong>Sommerville</strong> 2004 <strong>Software</strong> Engineering, 7th edition. Chapter 6 Slide 21
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