Metamorphosis of actors - Writting Use Cases

De http://www.cs.put.poznan.pl/lolek/homepage/Research_files/06-BIS-Nawrocki,%20Nędza,%20Ochodek,%20Olek%20-%20ver1.pdf


UC-3: Earning a bachelor degree
Main actors: University
{Candidate alias Admitted alias Student alias Graduated alias
Free Student alias Deleted}
Supporting actors: Senate, Rector
Main scenario
1. Senate defines the rules concerning admission.
2. Rector appoints members of the Enrolment Committee.
3. University organizes the Open Doors action.
4. Candidate makes the application.
5. Enrolment Committee announces lists of admitted. Candidate becomes
Admitted
6. Admitted starts up his study. Admitted becomes a Student.
7. Student successfully passes through semesters from 1 to 7.
8. Student takes a diploma exam. Student becomes Graduated.
9. Graduated receives a diploma.
Extensions
5a. Candidate is not admitted due to lack of free places.
5a1. Candidate is studying as a Free Student. Go to step 8.

Figure 7. A use case with actor metamorphosis