The Unified Modelling Language is a standard graphical language for modelling object oriented software At the end of the 1980s and the beginning of 1990s, the first objectoriented development processes appeared The proliferation of methods and notations tended to cause
10 Stakeholder reactions to situations particular type of work. On the other hand, he or she may be relieved about not being put out of wort i a)*. The user may be disappointed, since he or she might be looking forward to no longer having to do ince many people believe that software systems are easy to develop; they underestimate the complexity of tasks that are to be automated
Definition: Design is a problem-solving process whose objective is to find and describe a way: —To implement the system’s functional requirements... —While respecting the constraints imposed by the non-functional requirements... - including the budget
10.1 Basic definitions A failure is an unacceptable behaviour exhibited by a system —The frequency of failures measures the reliability —An important design objective is to achieve a very low failure rate and hence high reliability. —A failure can result from a violation of an explicit or implicit requirement
