In my assignment, requirements involve buying and selling stock/bond assets.
However, the usecase diagram or requirements does not mention anything about stock exchange.
Should I put this external system under assumptions, mentioning that system interacts with stock exchange to buy and sell assets?
Thanks for your reply.
Does it mean that I have to show interaction with stock exchange via JMS or webservice and show that in deployment diagram/sequence diagram and almost everywhere even without it being mentioned in requirements?