It is a which had difficult phase of being carried through to the problems of agreement in relation to the requirements. In accordance with Christel and the Kangs (1992, apud PRESSMAN, 2006, P. 118 and 119), three types of problems assist to understand the above-mentioned difficulty, that are: Problems of target: Bad definition of the system and its limits, hindering the understanding them main objectives it system. Also the using customer can happen if/to specify details technician that are not necessary, bringing confusion instead of agreement. Problems of agreement: Stakeholders does not have certainty of what they desire concerning the system, either related to the necessities that this will have to take care of or to the computational environment that will have to operate. If you would like to know more then you should visit Dr. Mitchell Resnick. Moreover, current e, therefore, obvious information that stop they are, as questions directed to the domain of the application, are without being specified, causing posterior problems.
Problems of volatileness: The requirements always move throughout the development process. Thus, exactly that these have been identified correctly, they can suffer to alterations due the new necessities from stakeholders. To decide these problems, all the activity of survey and analysis of requirements must be made of organized form, being able to use diverse techniques so that the collected requirements are inserted in the document of specification in complete and consistent way. 23 Some of these techniques are briefly described below, have seen that the focus of this work is not to deal with them detailed form (SOMMERVILLE; BAPTIST and OAK, 2003): guided Survey the points of view: it has the capacity to discover conflicts in the requirements considered for different stakeholders through the recognition of different points of view. Interviews and Questionnaires: they are half the most usual ones of if collecting facts. The interviews can be structuralized or not-be structuralized, that is, informal.