Why so many diagrams?

• Not all the diagrams discussed must appear in every model produced using the UML
• The variety of UNL diagrams allows a system to be represented from a number of views
• This is important as most systems will have a number of stakeholders who will view the system differently
• In order to accurately  define the requirements of the system it is important to examine the system from a variety of these points of view
• A more detailed examination of these diagrams will be carried our in future lessons