The following information was gathered during fact- finding to develop a customer care information system: In the new customer information system, A customer requests product information, places orders, and signs up. A sales rep initiates sales calls, responds to inquiry and follows up after prior order.

a) List the actors in the customer care information system described above.

b) List the use cases in the customer care information system.

c) Draw a use case diagram showing how the actors interact with the system.

A customer can be

a potential customer

an active customer

a former customer

A customer is considered a potential customer if the customer has requested for product information.

A customer is an active customer if the customer has placed an order in the past 24 months.

A customer is a former customer if the customer has placed an order in more than 24 months.

d) Draw a state transition diagram showing the different states of a customer as described