Source: A detailed description of the DDP Process can be found in [GILB93] and [WHEELER96].
1.The DDP is “project oriented” in that it is primarily concerned with a project”s economics, rather than an organization”s Work-Process economics (that is the DPP concern).
Rationale: This is to avoid the high Cost of late Defect removal (at test, or in field), or to avoid the high Cost of the consequences of malfunctions caused by the Defect.
“A stitch in time saves nine”.
2. DDP is not itself concerned with Process-Improvement, but it provides a stream of data, concrete Defect examples, and a working environment that can be used to feed into, and to help analyze effects of, a Defect-Prevention-Process.
This Concept entered by Ashiq.
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