For the problem area whose requirements you defined for exercise 3 in Chapter 2, determine what the appropriate actors might be.

Based on the context of the problem area whose requirements you defined for exercise 3 in Chapter 2, list (a) the use cases that are explicitly called for by the specification and (b) any additional use cases that you suspect might be worth exploring with the future users of the system.

Create a table mapping the actors you identified in exercise 1 to the use cases you listed in exercise 2, indicating whether a particular actor's participation in a use case is as an information provider or consumer.