Prepared by: Hussein Alhashimi.  The following are requirements of student's registration system.  What is wrong with these requirements?  What quality.

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Presentation transcript:

Prepared by: Hussein Alhashimi

 The following are requirements of student's registration system.  What is wrong with these requirements?  What quality factor is missing?  Rewrite the requirement document to reflect how McCall software quality factors are used:

 1- The system speed should not be slow. And students should be able to register their courses as fast as they can.  (efficiency) The registration system should respond time should be less than.055 seconds, and the students should be able to register their courses in 10 minutes.

 2- The application should be able to calculate students GPA correctly. (Reliability)  The probability for a non-accurate GPA, containing one or more mistakes, will not exceed 1%.

3-Any changes to the system or bugs correction should not take a long time (Correctness) Any changes or bug correction should not take more than 30 minutes, while in registration period it should not take more than 10 minutes.

4- The system should not be in failure mode the shortest possible time. (Reliability)  One of the requirements of the Registration system is that it should not fail during registration period, the recovery time should not exceed than 20 minutes in case of failure.

5- Students should be able to access their final marks. (Integrity)  Students should be allowed to view their final marks. They should not be able to make any changes

6- System should be easy to be understood by students. (Usability) Training of new students will take no more than two days, this should enable the student to submit the application in 20 minutes.