11. Glossary
Buyer/customer
A stakeholder who acquires or purchases a product or service from a supplier.
Need
Necessity, constraint, desire experienced and expressed by a user, stakeholder or project owner. What is necessary for the purchaser and justifies the design and realization of the system or product. Needs are generally vague at the start of a project: they must be identified, expressed, clarified and made coherent.
Context
All concrete elements outside the system under study, which have a service-type relationship with it, and/or which exchange matter, energy or information with it, and/or which are physically connected to it.
Requirement
Clarified expression of a need, presented in a formalized (computerized, graphical,...
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Glossary
Bibliography
International standards
ISO/IEC 15288:2008 - Systems and software engineering - system life cycle processes, Geneva, Switzerland: International Organization for Standardization (ISO)/International Electronical Commission
ISO/IEC 29148: 2011 - Systems and software engineering - Life cycle processes - Requirements engineering, Geneva, Switzerland:...
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www.incose.org International Council on Systems Engineering (INCOSE) is a not-for-profit membership organization founded in 1990. Its mission is to share, promote and advance the best of systems engineering from across the globe for the benefit of humanity and the planet.
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