What is the relationship between Functional Specifications and Design Specifications?

The relationship between Functional Specifications and Design Specifications is fundamentally one of dependence, where Functional Specifications provide the foundational requirements for the Design Specifications. This means that the Functional Specifications outline what a system or product is intended to do—defining the functional requirements from a user's perspective. Upon acceptance of these requirements, the Design Specifications can then be developed to detail how those functionalities will be implemented technically and structurally in the design of the system.

In this context, the Functional Specifications serve as a guiding framework, ensuring that the design aligns with the intended user needs and operational goals. This structured process ensures that the final product not only meets its functional criteria but is also feasible and practical to implement according to the agreed specifications. As a result, there is a direct relationship where the Design Specifications are built upon the foundation laid out by the Functional Specifications, leading to coherence and alignment throughout the development process.