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开始学习
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Descriptions of what the system should do: the services that it provides and the constraints on its operation
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what are user requirments? 开始学习
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features the user needs the software product to support
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What are system requirements? 开始学习
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things the software needs to function
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what are functional requirements? 开始学习
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defines a function of a system or its component. A function is described as a set of inputs, the behavior, and outputs.
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what are non functional requirements? 开始学习
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a requirement that specifies criteria that can be used to judge the operation of a system, rather than specific behaviors. They are contrasted with functional requirements that define specific behavior or functions.
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What is requirements engineering? 开始学习
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The process of gathering, analysing, documenting, and checking requirements
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what are teh 4 stages of Requirements engineering? 开始学习
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▶ Feasibility study ▶ Requirements elicitation ▶ Requirements specification ▶ Requirements validation
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What is a feasibility study? 开始学习
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an assessment of the practicality of a proposed plan or method.
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What is requirments elicitation? 开始学习
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the practice of collecting the requirements of a system from users, customers and stakeholders. AKA "requirement gathering" Commonly used elicitation processes are the stakeholder meetings or interviews.
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Whata re the 4 stages of Requirements Elicitation? 开始学习
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1) discovery and understanding 2) clasification adn organisation 3) prioritisation and negotiation 4) documenttation
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what are the main methods of requirements elicitation? 开始学习
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interviews, focus groups, scenarios, use cases, ethnography
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开始学习
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wtaching how people work and understanding based on observation
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