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Non-functional requirement

In systems engineering and requirements engineering, a non-functional requirement (NFR) is a requirement that specifies criteria that can be used to judge the operation of a system, rather than specific behaviours. They are contrasted with functional requirements that define specific behavior or functions. The plan for implementing functional…

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Examples

Real timeAccessibilityAdaptabilityAuditabilityAvailability
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Definition

Mathematical functionBlack boxFunctional modelIPO modelTestability
5 related topics

Criticism

MisnomerThoughtWorks
2 related topics

Classification of non-functional requirements

Reliability, availability, maintainability and safety
1 related topics

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Overview

Definition

Classification of non-functional requirements

Examples

Criticism

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Map overview Semantic statistics

Non-functional requirement

Nodes85
Edges84
Triples59
Avg. degree1.98
Density0.023529
Components1

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Non-functional requirement

Top relations

related to External links · 31
Non-functional requirement → Archived, CISQ, Cite, CiteSeerX, Consortium, Cs, Csc, Dalbey, Do Software Architectures Meet, Do User Stories Really, Eide, Extra-Functional, Help, IT Software Quality, John, July, Methodsandtools, Modeling Non-Functional Aspects, Non-Functional Requirements, Non-Functional Requirements Be Here
related to Definition · 9
Non-functional requirement → Broadly, Functional, In, Informally, IPO, Non-functional, Other, Qualities, The
related to Examples · 5
Non-functional requirement → How, If, Other, Sufficient, This
related to Criticism · 4
Non-functional requirement → CFR, In, The, ThoughtWorks
see also · 4
Non-functional requirement → Functional Requirements, ISO/IEC, IT Software QualityISO/IEC, Significant RequirementsSNAP Points

Important terminology Word statistics

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Important terminology

requirements non-functional system requirement software functional specific quality time architecture characteristics also management retrieved october 2017 plan implementing detailed known

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
non-design items of statutoryinstance ofthey also include both characteristics of the functions and constraints on the system0.80text
regulatoryinstance ofthey also include both characteristics of the functions and constraints on the system0.80text
standardsinstance ofthey also include both characteristics of the functions and constraints on the system0.80text
protocolsinstance ofthey also include both characteristics of the functions and constraints on the system0.80text
or other external requirements.It is important to specify non-functional requirements in a specificinstance ofthey also include both characteristics of the functions and constraints on the system0.80text
measurable wayinstance ofthey also include both characteristics of the functions and constraints on the system0.80text
Non-functional requirementrelated to CriticismThe0.60section
Non-functional requirementrelated to CriticismIn0.60section
Non-functional requirementrelated to CriticismCFR0.60section
Non-functional requirementrelated to CriticismThoughtWorks0.60section
Non-functional requirementrelated to DefinitionBroadly0.60section
Non-functional requirementrelated to DefinitionFunctional0.60section

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    Min side: 3
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