Non-Functional requirements are those that define the quality of a system, such as performance, security, scalability, and maintainability. They are not related to specific functions or features of the system, but rather to the overall system design.
Non-functional requirements are a type of software requirement that describes the system’s behavior in terms of its performance, scalability, security, usability, and other qualities. They are also known as “quality of service” requirements. Non-functional requirements are often used to supplement functional requirements, which describe the system’s behavior in terms of its inputs and outputs.
Non-functional requirements are important because they help to ensure that the system meets the needs of its users. For example, a system may need to be secure, reliable, and easy to use. Non-functional requirements help to ensure that these qualities are met.
Performance requirements are a type of non-functional requirement that describe the system’s performance in terms of speed, throughput, and response time. Performance requirements are important because they help to ensure that the system is able to handle the expected load.
Scalability requirements are another type of non-functional requirement that describe the system’s ability to scale up or down in response to changes in demand. Scalability requirements are important because they help to ensure that the system is able to handle increased or decreased demand without sacrificing performance.
Security requirements are a type of non-functional requirement that describe the system’s ability to protect data and resources from unauthorized access. Security requirements are important because they help to ensure that the system is secure and that data is not compromised.
Usability requirements are a type of non-functional requirement that describe the system’s ability to be used by its intended users. Usability requirements are important because they help to ensure that the system is easy to use and that users are able to accomplish their tasks.
Non-functional requirements are an important part of any software system. They help to ensure that the system meets the needs of its users and that it is secure, reliable, and easy to use.