This Student Login Sequence Diagram is a type of UML (Unified Modeling Language) diagram used to model the interactions of objects in a system over time. A sequence diagram allows developers to sketch and demonstrate how processes behave and interact in order. The diagram depicts the objects, or actors, in the system. Each object has a lifeline that represents its temporal existence. These lifelines are represented by parallel vertical lines that can never intersect. Each object's lifeline can also have an activation bar that indicates when it is active in the system and accepting or processing information from another object.
