Question

In a use case diagram, what does a dashed line with an arrowhead from a use case to another use case represent?
Association
Generalization
Include
Extend

Answer 1

Extend

In a use case diagram, a dashed line with an arrowhead from a use case to another use case represents the "Extend" relationship. The "Extend" relationship is used to model optional behavior that can be added to the base use case under certain conditions.