Non-functional Requirement
[nɑn ˈfʌŋkʃənəl rɪˈkwaɪrmənt]
nounpl: Non-functional Requirements
Requisito Não-Funcional
1. A software requirement that specifies criteria used to judge the operation of a system rather than specific behaviors, such as performance, reliability, security, scalability, and usability
The application's non-functional requirement specifies that the system must handle 10,000 concurrent users.
O requisito não-funcional da aplicação especifica que o sistema deve suportar 10.000 usuários simultâneos.
2. Requirements that define how a system should behave and its characteristics, as opposed to what it should do (functional requirements)
Security is a critical non-functional requirement for the banking software.
Segurança é um requisito não-funcional crítico para o software bancário.
3. Quality attributes and constraints that affect the overall performance and user experience of a software system
Response time under 2 seconds is a non-functional requirement for the web portal.
Tempo de resposta inferior a 2 segundos é um requisito não-funcional para o portal web.
The term 'Non-functional Requirement' is a technical standard used globally in software development, including Brazil and the USA. It is particularly important in agile methodologies and SCRUM frameworks widely adopted in Brazilian tech companies. The distinction between functional and non-functional requirements is fundamental in Brazilian IT professional certifications and project management courses.
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