Elements of a use case
A unique identifier
A name that briefly states the user task in the form of
“verb + object,” e.g., “Place an Order”
A short textual description
Preconditions that must be satisfied before the use case
can begin.
Postconditions that describe the state of the system after
the use case is successfully completed.
A numbered list of steps that shows the sequence of
interactions between the actor and the system.