A Functional Requirements Specification (FRS) is a detailed document that describes system functionality. It outlines what a system should do.
Key Elements of an FRS:
1. System functions and features
2. User interactions
3. Data handling requirements
4. Performance criteria
5. Interface specifications
An FRS Includes:
1. Detailed descriptions of each function
2. Input and output specifications
3. Error handling procedures
4. Examples of system behaviour
5. Use cases or user stories
Benefits of Creating an FRS:
1. Clarifies system expectations
2. Guides development process
3. Serves as a reference for testing
4. Facilitates communication between stakeholders
5. Helps estimate project scope and resources
Developers and testers use the FRS throughout the software development lifecycle. It forms the basis for system design, implementation and testing.