Ans :
Dynamic diagrams or behavioral diagrams depict the dynamic and moving parts of the system. The main behavioral elements depicted in the dynamic UML diagram are object state, control flow, interaction, state machines and
such. The main dynamic UML diagrams are sequence diagram, activity diagram, state chart diagram, use case and collaboration diagram.
The sequence diagram models the behavior of a single use case or a single scenario. The sequence diagram visually depicts how each objects interact with each other. In the sequence diagram we have a time ordered messages
where vertical dimension represents the time axis and horizontal dimension represents the roles.
The activity diagram describes the business logic the business process and work flows. The activity diagram models the use case.
The state diagrams describe the systems behavior through state transitions. The state diagram depicts all possible states of an object when an event occurs.
