Software Engineering

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CHAPTER 1 
Introduction to Software Engineering
The WBS provides the basis for constructing project and technical plans and 
schedules. There is a hierarchy of plans and schedules prepared by the various pro-
ject organizations. 
Figure 1.3
 portrays a general hierarchy that associates the layers 
of the WBS with the various organizational, technical, and project plans and sched-
ules. As the project, systems architecture, and WBS evolve in definition and clar-
ity, the details of organizational, technical, and project plans can be expanded. The 
integrated technical plan is developed by integrating technical organizational plans 
with the systems engineering plan. The IMP and IMS incorporate and summarize 
the project and integrated technical plans and schedules.
The hierarchical development of these plans and schedules provides a sepa-
ration of concern so that the project management and technical organizations 
can address their roles and responsibilities within the overall project context. 
Determining the full impact of proposed changes on the project effort will require 
that all of these plans and schedules are considered and the work packages revised 
to provide a basis for incorporating a change into the project workflow.