The object model is defines the
static structure of a given system by giving the structure of its objects and
relationships to each other at a single moment of time.
Those aspect
of a system that are concerned with time and changes are the dynamic model,in
constraints with the static or object model. The dynamic model examines the
changes to the objects and their relationship over time. It deals with flow of
control, interactions and sequencing of operation in a system to concurrently
active objects. The major dynamic modeling concepts are events states, state
diagrams,conditions,actions.
Controls is
that aspect of a system that describes the sequences of operations that occurs
in response to external stimuli, without consideration of what the operation
do, what they operate on, or how they are implemented.
The major dynamic modeling concept are events
which represents external stimuli and states, which represent values of
objects.
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