What are non-functional requirements?

Nonfunctional Requirements (NFRs) define system attributes such as security, reliability, performance, maintainability, scalability, and usability. They serve as constraints or restrictions on the design of the system across the different backlogs. They ensure the usability and effectiveness of the entire system.

What is NFR in software?

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 behaviors.

What are portability requirements?

DEFINITION: Portability is the ease with which a software system can be transferred from its current hardware or software environment to another environment. ELICITATION: Portability requirements address the user concern for how easy it is to transport the system.

What the heck are non-functional requirements?

A non-functional requirement defines the performance attribute of a software system.

What does non-functional mean?

nonfunctional – not having or performing a function. unserviceable – not ready for service; “unserviceable equipment may be replaced”. functional – designed for or capable of a particular function or use; “a style of writing in which every word is functional”; “functional architecture”.

What does non functional mean?

Definition of nonfunctional. : not functional: such as. a : having no function : serving or performing no useful purpose Naive art … tends to be decorative and nonfunctional.— Robert Atkins . b : not performing or able to perform a regular function … the entire network is rendered nonfunctional if the central controller fails.— Charles Feltman .

What is the abbreviation for non functional requirements?

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 behaviors. They are contrasted with functional requirements that define specific behavior or functions.