This User Registration UML Sequence Diagram depicts the sequence of interactions that occur with the objects when the process is carried out on the system's login page. A sequence diagram is one of the UML models used to present the workflow, message sequence, and interactions in the Login and Registration. The table displays the sequence diagram for login and registration. It contains the entire project component. The login and registration sequence diagram depict the scenario and the messages that must be passed between objects. It's a flowchart that shows how activities are carried out, including when and how messages are sent.