Non-Functional Requirements?

Non-Functional Requirements?

Non-functional requirements represents the limitations or constraints under which the developed system must work. The requirements are not directly related to the functionalities or services of the system but these requirements play a key role in success of failure of any system. If these requirements are not given importance then the develop system may become unacceptable. For example, if we say that proposed system must also run under Red Hat Linux, Version 6.2 then it is a non-functional requirement.