19.4 System development
System development is a complex process in which the elements that are part of the system are developed or purchased and then integrated to create the final system. The system requirements are the bridge between the conceptual design and the development processes. During conceptual design, business and high-level functional and non-functional system requirements are defined. You can think of this as the start of development, hence the overlapping processes shown in Figure 19.1. Once contracts for the system elements have been agreed, more detailed requirements engineering takes place.
Figure 19.10 is a model of the systems development process. Systems engineering processes usually follow a “waterfall” process model similar ...
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