21
represented and put on a
square box, and
time sequence
is represented by a
vertical
line
below the objects.
2.4.4 Activity Diagram
An
Activity
diagram
is
a
dynamic
diagram
that
shows
the
activity
and
the
event
that
causes
the
object
to
be
in
the
particular
state
[11]
.
Using
Activity
diagram
can
help
developers to
understand the activities and events that
happened
in the system better. By
viewing activity diagram, problems can be analyzed and fixed.
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