识别需求处理数据量的多少、系统响应时间、查询速度、数据的精度、系统工作可靠性程度等
这是为了验证设计或识别需求修改的地方。
This is done to validate the design as is, or identify areas that need to be modified.
产品经理——跟利益相关人协作，识别需求，设定优先级。
Product Manager - Works with stakeholders, identifies requirements and sets priority.
准确获取产品线需求、识别需求的共性和可变性，是软件产品线（SPL）成功的关键。
To elicit the requirements, identify the requirements commonness and variability correctly is the key for Software Product Lines(SPL) success, which needs a particular requirement process and methods.
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