SOFTWARE DESIGN VERIFICATION AND VALIDATION - Software Design for Six-Sigma: A Roadmap for Excellence - page 501

FIGURE 19.1 Modified V development process. 1

level) of the V and the verification and validation arm (the right-most branch of the V
from a low level back up to a high level). Although this process suggests that a testing
suite for complete verification and validation is linked easily throughout the design
process; in practice, this is far from the case. An Internet survey for verification, val-
idation, and testing process software application tools quickly revealed the absence
of unifying tool support for conjoining the terminal phase to support predesign and
postdesign documentation, which is vastly used in the design branch of the process.
There is a variety of commercial software tools available that provide process stages;
some of which singularly or in tandem incrementally approach a complete solution;
however, nothing currently fills 100% of the void.
Figure 19.2 depicts a flow diagram of product-process development based on
the V model. The intention of this diagram is the graphical representation of series
and parallel activities at several levels of detail throughout the development of a
product. The subset of phases along the bottom of the diagram effectively repre-
sent the required activities that are not necessarily associated with particular phases
connected to the V path. This set, however, constitutes interdependent phases that
may occur along the timeline as the process is implemented from the farleft to the
farright phase of the V-represented phases. This diagram is color coded such that

1 http://en.wikipedia.org/wiki/V-Model (software development).