drwo State Machine Diagram) The SIS (Student Information System) state changes from Idle to Servicing Teacher when the Teacher logged into SIS by entering userid/password. On entering the Servicing Teacher state, the entry action read userid/password is performed. Note, that transition from Servicing Teacher state back to the Idle state could be triggered by logout event as the Teacher could logout Attendance at any time. Serving Teacher state is a composite state with sequential sub states Teacher Authentication, Selecting Attendance and Attendance. Teacher Authentication and Attendance are composite states by themselves which is shown with hidden decomposition indicator icon. Serving Teacher state has trigger less transition back to the Idle state after Attendance is finished. The state also has exit action logout which releases teacher’s session on leaving the state, no matter what caused the transition out of the state
(drwo State Machine Diagram)
The SIS (Student
Serving Teacher state is a composite state with sequential sub states Teacher Authentication, Selecting Attendance and Attendance. Teacher Authentication and Attendance are composite states by themselves which is shown with hidden decomposition indicator icon. Serving Teacher state has trigger less transition back to the Idle state after Attendance is finished. The state also has exit action logout which releases teacher’s session on leaving the state, no matter what caused the transition out of the state.
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