All behavioural models really do is describe the control structure of a system. This can be things like:
<span><span>
Sequence of operations
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Object states
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and Object interactions
</span></span>
All functional models really do is describe the computational
structure of the system. On the other hand, this system – even though it
may have many Use Cases – should only have one functional model, yet
this may be composed of many functional diagrams.
The first e-commerce service would be A)Banking. Hope this helps.
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