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Sequence Diagram example
Below is a sequence diagram for making a car reservation using a
browser.
The object initiating the sequence of message is a reservation internet
browser.
The internet browser sends a makeReservation() message to a travel
agency,
which sends a makeReservation() message to a car rental reservation. If
the
car is available, then it makes a Reservation and a Confirmation.
Each
vertical
line represents the time that an object exists. Each arrow is a message
call.
An arrow goes from the sender of the activation bar of the message on
the
receiver's lifeline. The activation bar represents the duration of
execution
of the message.
The car rental reservation issues a self call to
determine
if a car is available. If so, the car rental reservation makes
a Reservation
and a Confirmation.
The file deployment diagram extension is *.usd.
Notes can be included.
