System Requirement (glossary)

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(1a) A statement that transforms the stakeholder, requirement-driven view of desired services into technical view, of a required (engineered system) that could deliver those services. (ISO/IEC, 2008, section 6.4.2)

(1b) The Requirement Analysis process builds a representation of a future system that will meet stakeholder requirements and that, as far as constraints permit, does not imply any specific implementation. It results in a measurable system requirement that specifies, from the suppliers perspective, what characteristics it is to possess and with what magnitude. This forms the basis for verification of any system implementations. (ISO/IEC, 2008, section 6.4.2)

Source

(1) ISO/IEC. 2008. Systems and Software Engineering - System Life Cycle Processes. Geneva, Switzerland: International Organization for Standardization (ISO)/International Electronical Commission (IEC), ISO/IEC 15288:2008 (E).

Discussion

Both definitions are mofified from the introduction to the Requirements Analysis process, there is no formal definition of the term "System Requirement" in the standard.

The term (engineered system) has been subsituted for the word (product) in definition 1a to better align with the terminology used in the SEBoK.

For a full discussion of the role and importance of system requirements in Systems Engineering see the System Requirements article.


SEBoK v. 1.9.1 released 30 September 2018

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