System development life cycle is part of the system definition.
A system development life cycle is composed of a number of clearly defined and distinct work phases which are used by systems engineers and systems developers to plan for, design, build, test, and deliver systems. Like anything that is manufactured on an assembly line, an SDLC aims to produce high quality systems that meet or exceed customer expectations, based on customer requirements, by delivering systems which move through each clearly defined phase, within scheduled time-frames and cost estimates ( Wiki ...).
This model applies to common methodologies for system engineering. In general, a critical incidence is any input resulting in a need to change the requirements, such as market changes. This guide is about mitigating the risks of design mistakes, hence, the focus on incidences due to design mistakes.
Updated on 01 Jul 2016.