Discuss how the software requirements model, manifested by scenario-based, class-based, and behavioral elements, feeds the design task

Discuss how the software requirements model, manifested by scenario-based, class-based, and behavioral elements, feeds the design task. Explain how these software requirements model elements produce a data/class design, an architectural design, an interface design, and a component design.

What is design quality? Why is design of software related to quality? Software engineers say that requirements have to do with what you are going to make. Software engineers say that design has to do with how you are going to make it and whatever it is you are going to make. How is this related to quality?