What represents a set of requirements or designs in detail?

A model represents a set of requirements or designs in detail because it provides a structured representation of the elements and relationships within a system. In requirements analysis and design definition, models serve as essential tools that capture the complexity of requirements and present them in a clear format. This can include visual representations such as diagrams, flowcharts, or other graphical formats that help stakeholders understand the specifications and interactions involved.

Models offer a comprehensive view that can encompass various aspects of the system being designed, such as behavior, data, and architecture. The detailed nature of a model makes it an effective means for validating requirements and ensuring that all stakeholder needs are being addressed adequately, facilitating communication and reducing misunderstandings.

While prototypes may demonstrate functionality and user interactions, they often focus on users' experiences and may not capture all requirements in detail. Reports and summaries typically provide high-level overviews or findings rather than detailed representations, making them less suitable for conveying the intricate specifications required in the requirements analysis and design phase.