In the intention to improve the software development and to get products with the desirable levels of quality, inside the schedule and budget considered, the last decade attended a change of approach about the software process [1]. Then, it has a new approach that the main focus is in guarantee of quality the own productive process, that?s why it has shown the determinative factor for reach of final product quality.
From this change of focus, it was intensified research about development process and some norms and standards had been defined in order to assist the software process definition and improvement. With the intensification of these studies, it evidenced that was necessary to improve each step of the development life cycle to reach higher levels of quality. However, so that it became possible, quantitative data, that they could describe the reality of the process, needed to be gotten and duly analyzed.