In the Web-based Online Shopping System, customers can request to purchase one or more items from the supplier. The customer provides personal details, such as address and credit card information. This information is stored in a customer account. If the credit card is valid, then a delivery order is created and sent to the supplier. The supplier checks the available inventory, confirms the order, and enters a planned shipping date. When the order is shipped, the customer is notified and the customers credit card account is changed.

a)Draw the use case model for the Online Shopping System

b)Choose one of the use cases and create a use case description for it

c)Create an activity diagram for the same use case described in Problem b)

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