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The deliverables section says 'Create either a sequence diagram or collaboration diagram for each use case provided'.
The USe case diagram includes 'Log in', 'View Frew Flyer Miles' and 'Create Profile' but no Use Case Pecisfication is provided.
Does this mean that i do not need to provide Sequence diagrams for these?
If you do not provide an iteration diagram for those use cases, you will need to justify your decision, and document it down. But, it�s a good approach provides this diagrams, since they are pre-conditions from too many others use cases.
Since you don't have the specification, create it. It is much more easier for you