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  "description": "软件需求既是对软件产品或项目的需要与约束的表述，也是建立并维护这些需求的活动。",
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    "summary": "软件需求既是对软件产品或项目的需要与约束的表述，也是建立并维护这些需求的活动。",
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        "title": "Guide to the Software Engineering Body of Knowledge (SWEBOK Guide) v4.0a",
        "author": "Hironori Washizaki (ed.), IEEE Computer Society",
        "date": "2026-08",
        "url": "https://ieeecs-media.computer.org/media/education/swebok/swebok-v4.pdf",
        "locator": "Chapter 1; Appendix B"
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    "body": "软件需求有两个视角：一是表达软件产品或项目的需要与约束，这些需要与约束参与解决现实问题；二是为产品和实施该产品的项目开发并维护需求的活动。需求若缺失、被误解或不正确，又没有及早发现，会顺着设计、编码和测试决策逐级放大返工。指南指出两类常见问题：利益相关方的需求及其必要细节没有传达给软件工程师；需求的表述允许多种解释，其中只有一种正确。[^s1]\n\n需求活动在指南中按获取、分析、规格说明、确认和管理展开。规格说明的形式包括非结构化自然语言、结构化自然语言、基于验收准则的说明和基于模型的说明。[^s1]\n\n\n该知识域在指南中的一级主题为：\n\n- 软件需求基础\n- 需求获取\n- 需求分析\n- 需求规格说明\n- 需求确认\n- 需求管理活动\n- 实践考虑\n- 软件需求工具\n\n指南附录收录的需求工程标准包括 [[work_ieee_29148_2018_8559684|ISO/IEC/IEEE 29148:2018]]，生存周期信息项标准包括 [[work_ieee_15289_2019|ISO/IEC/IEEE 15289:2019]]。[^s1]",
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