FunctionalAnd NonFunctional requirements : The main difference between FunctionalAnd NonFunctional requirements lies in the nature of what they define within a software system:
1. Functional Requirements:
FunctionalRequirements describe the specific functionality or tasks that a software system must perform. They outline the actions the system should execute and the responses it should produce. These requirements are focused on the system’s behavior and how it interacts with users or other systems. Functional requirements are typically detailed, specific, and measurable.
Example: The system should allow users to add items to a shopping cart, proceed to checkout, and make a payment.
Non-functional requirements, on the other hand, define the qualities, characteristics, or constraints that a software system should possess. They focus on aspects beyond specific functionality, such as performance, reliability, usability, security, or maintainability. Non-functional requirements are usually more general and describe the overall behavior or properties of the system.
Example: The system should respond to user actions within 2 seconds, ensuring fast performance.
In summary, FunctionalRequirements define what a software system should do and how it should behave, while non-functional requirements specify the qualities or constraints that the system should possess. Both types of requirements are crucial for designing and developing a software system that meets users’ needs and expectations.