Use case 6 realization: View All Rent History

Rational

Main flow	Question: what class ...	Answer	Justification
1. The company requests to see all the rental history.	... interacts with the user?	ViewAllRentHistoryUI	Pure Fabrication.
	... coordinates the use case?	ViewAllRentHistoryController	Controller.
	... knows the Rentals?	RentalManager	Information Expert: RentsManager knows all its Rents.
	... has the RentsManager?	Company	High Coesion + Low Coupling: Company takes advantage of a RentList to manage its Rents.
2. The system shows the rental history of all clients.

Systematization

From the rational results that the conceptual classes promoted to software classes are:

• Company
• Rent

Other identified software classes (e.g. Pure Fabrication):

• ViewAllRentHistoryUI
• ViewAllRentHistoryController
• RentalManager

Sequence diagram

Class diagram