3.4.2 UML Diagram
The use of Universal modeling language (UML) at this point is to express the significant details about the system such that the problem will be clearly understood, solution architecture can be developed and a chosen implementation scheme can be clearly identified and constructed. The UML not only provides the notation for the basic building blocks but it also provides ways to express complex relationship among the basic building blocks.
3.4.3 Use Case Diagram for the new System
Use Case diagram is the simplest and most effective technique for modeling system requirements from a user’s perspective. Use Cases are used to model how a system or business currently works. It is really a form of process modeling. It is, however, an excellent way to lead into object-oriented analysis of systems.