The image is a UML sequence diagram that outlines the interactions involved in the user registration and login process for a software system. The diagram includes actors and system components arranged horizontally across the top: "User," "SignUp," "Login," "Admin page," "Student Page," "Database," and "Scheduler."
Starting from the left, a user (indicated by the stick figure symbol) goes through an "Alt" (alternative) scenario for a "New user" where they enter information into the SignUp component. This information is sent to the Database, where it is validated and registered, leading to a response that the "User Added."
Another "Alt" scenario involves a "Student" entering credentials in the Login component. The system validates these credentials against the Database, and upon successful validation, the credentials are accepted, and the flow continues, presumably granting access to the Student Page.
The diagram employs standard UML notation, with solid lines representing synchronous calls and dashed lines indicating responses. The use of an "Alt" frame specifies alternative paths based on conditions
— in this case, differentiating between new user sign-up and student login. The interaction between components is sequential, indicating a step-by-step process that users follow to interact with the system. This sequence diagram is instrumental in visualizing and understanding the flow of events in the system's operation regarding user registration and authentication.
