Diagrams in UML - Sequence Diagram
A sequence diagram displays object interactions arranged in a time sequence
1: set course info
2: request processing
3: add course
This use case begins after the Registrar logs onto the Registration System with a valid password.
The registrar fills in the course form with the appropriate semester and course related info.
The Registrar requests the system to process the course form.
The system creates a new course, and this use case ends