Implementation, Integration, and Systems Test PPB elements
are based on the work products most important to those phases.
In addition to productivity for new development, an organization would want
to develop additional PPBs covering other processes, for example, productivity for
maintenance. In addition to productivity, other important organizational goals
(e.g., product quality and schedule) would be covered in separate PPBs.
This example PPB points out one of the most important issues with using measures,
particularly with using measures at higher maturity levels??”that is, the need
for clear definitions of measures. In this case, what the organization means by a complex
requirement, a nominal requirement, and a simple requirement must be clearly
defined so that the people collecting the data can tell how to count them. Most
organizations start with a working definition and refine the definitions over time. In
addition to defining what a requirement is, you also need to define what is included
in the number of hours: Is it only hours sitting at your desk writing a requirement?
Does it include hours for attending status meetings to discuss your work? How
do you count time for review of requirements? These are questions that need to be
answered in your organization to ensure that the data are collected consistently.
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