Java Tutorial - Java Scipt :
Understanding the Use Cases
Figure 13.2 shows a UML (Unified Modeling Language) use case diagram, illustrating the use cases developed for this scenario. Ause case diagram shows users in roles and illustrates how those users interact with the system. The
users within a role are portrayed as stick figures. The ovals represent actions that a user in a role can perform on the system. Two roles are shown in the diagram.
VerifiedUser: A verified user is a user who has been logged into the system. A verified user can modify his or her own user profile information and can log out.
NewUser: A new user is one who is not logged in. A new user can log in, becoming a verified user or can create a new user record.
