Non-Functional Requirements

In systems engineering and requirements engineering, a non-functional requirement is a requirement that specifies criteria that can be used to judge the operation of a system, rather than specific behaviors. This should be contrasted with functional requirements that define specific behavior or functions. The plan for implementing functional requirements is detailed in the system design. The plan for implementing non-functional requirements is detailed in the system architecture.Broadly, functional requirements define what a system is supposed to do and non-functional requirements define how a system is supposed to be.
Posts about Non-Functional Requirements
  • Using Requirements to Improve Usability For Your Website

    … users achieve their goals. In other words, functional requirements explain exactly what the product does. Business rulesTransaction corrections, adjustmentsAdministrative functionsAuthenticationAudit trackingExternal interfacesCertification requirementsReporting requirementsHistorical dataLegal / Regulatory requirements 2. Non-Functional…

    Shane Jones/ Search Engine Journal- 6 readers -