Final answer:
An alternate flow in a use case represents a different path or scenario that can occur within a use case. It is used to handle exceptional or alternative behavior that happens under certain conditions.
Step-by-step explanation:
An alternate flow in a use case represents a different path or scenario that can occur within a use case. It is used to handle exceptional or alternative behavior that happens under certain conditions.
For example, let's say we have a use case for a shopping cart system. The main flow would be the typical steps a user takes to add items to the cart and proceed to checkout. However, an alternate flow could be if the user tries to add an item that is out of stock, where the system would display an error message and prevent the item from being added to the cart.
This alternate flow helps to identify and handle exceptional conditions or alternative paths that deviate from the main flow of the use case.