Functional requirements are capabilities that the product must do to satisfy specific user needs. They are the most fundamental requirements. Functional requirements are sometimes referred to as business requirements. … Non-functional requirements include usability, performance, reliability and security requirements.
What are functional and non-functional requirements in project management?
Simply put, the difference is that non-functional requirements describe how the system works, while functional requirements describe what the system should do. … One could also think of non-functional requirements as quality attributes for of a system.
What is the difference between business requirements and functional requirements?
Business requirements explain the “why” and “what” of a project, and the functional requirements explain the “how” of the project. The only difference between a BRD and an FRD is that one describes the high-level business needs while the other describes the functions required to fulfil the business need.
What is the difference between functional and technical requirements?
What is the difference between technical and functional specs? Functional specs are based on the business requirements and contain the details of end user expectations of the product functionality. … Technical specs contain the details of the how this is/can be achieved and the final product functionality details.
Is robustness a functional requirement?
An important aspect of quality for a high-quality system is the ability to function correctly and in an expected manner independent of events in the environment. This ability is also known as robustness.
What is scalability in non-functional requirements?
Scalability is the ability of the application to handle an increase in workload without performance degradion, or its ability to quickly enlarge.