What is the difference between functional and non-functional requirements in the SDLC?

Software Development Life Cycle Sdlc Questions



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What is the difference between functional and non-functional requirements in the SDLC?

Functional requirements in the SDLC refer to the specific features and functionalities that a software system must possess in order to meet the needs of its users. These requirements define what the software should do and how it should behave in terms of its functionality.

On the other hand, non-functional requirements in the SDLC focus on the qualities and characteristics of the software system, rather than its specific functionalities. These requirements define how the software should perform, such as its reliability, performance, security, usability, and maintainability. Non-functional requirements are often related to the overall user experience and the system's ability to meet certain standards or regulations.

In summary, the main difference between functional and non-functional requirements in the SDLC is that functional requirements define what the software should do, while non-functional requirements define how the software should perform and the qualities it should possess.