You have been asked to build one the following system:

A simple invoicing system for a small business. The main users would be the accountant and the business manager. Using the system they should be able to create invoices, issue invoices, cancel invoices...etc. For every invoice they should be able to add automatically products sold by the small business. The system should automatically get product details, price of of each product and calculate the total amount of the invoice. In addition the system should calculate the sales tax and finally the system should interface to exchange to allow the end user to send the invoice to a group of customers or a single customer.

1) Identify one operational Stakeholder

2) Identify three goal use cases for each use case identify the primary actors. Then provide a brief use case description (processing narrative) for each use case.

3) Identify 5 main analysis classes , for each class identify three attributes and two main responsibilities (signature methods)

4) Name two classes that need to collaborate, explain why.