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Lecture Software requirements engineering - Lecture­ 9: Requirements elicitation process

After this chapter the student should have acquired the following knowledge and skills: Elicitation process, elicitation techniques, document studies, questionnaire, brainstorming, focus groups, collaborative requirement gathering, QFD, analysis, negotiation. | Requirements Elicitation Process Lecture-9 Recap 2 Elicitation process Elicitation techniques Scenarios Observation and social analysis Prototyping Scenario exercise: Write a scenario for Registering a course for university Software Requirements Engineering 3 Choose course from course handbook or web site Collect registration form or download web form Complete registration form Submit registration form for checking Accept registration confirmation Today’s lecture Software Requirements Engineering 4 Elicitation process Elicitation techniques Document studies Questionnaire Brainstorming Focus groups Collaborative requirement gathering QFD Analysis Negotiation Document studies Software Requirements Engineering 5 Document studies are used to cross-check the interview information. It is a fast way to get information about data in the old “database”. The analyst studies existing documents such as forms, letter files, computer logs and documentation of the existing computer system. He may . | Requirements Elicitation Process Lecture-9 Recap 2 Elicitation process Elicitation techniques Scenarios Observation and social analysis Prototyping Scenario exercise: Write a scenario for Registering a course for university Software Requirements Engineering 3 Choose course from course handbook or web site Collect registration form or download web form Complete registration form Submit registration form for checking Accept registration confirmation Today’s lecture Software Requirements Engineering 4 Elicitation process Elicitation techniques Document studies Questionnaire Brainstorming Focus groups Collaborative requirement gathering QFD Analysis Negotiation Document studies Software Requirements Engineering 5 Document studies are used to cross-check the interview information. It is a fast way to get information about data in the old “database”. The analyst studies existing documents such as forms, letter files, computer logs and documentation of the existing computer system. He may also print screen dumps from the existing system. Questionnaires Software Requirements Engineering 6 It is used to get information from many people. Can be used in two ways To get statistical evidence for an assumption, People ask closed questions such as, “How easy is it to get customer statistics with the present system: very difficult, quite difficult, easy, very easy ” To gather opinions and suggestions. People ask open questions, e.g. “What are the three biggest problems in your daily work?” and, “What are your suggestions for better IT support of your daily work?” Brainstorming Software Requirements Engineering 7 In a brainstorming session RE team gather together with a group of people, Create a stimulating and focused atmosphere, and let people come up with ideas without risk of being ridiculed. The facilitator notes down all ideas on a whiteboard. An important rule of the game is not to criticize any idea. Even seemingly stupid ideas may turn out to have a valuable “diamond” seed