1. Mobiline is an online mobile shopping System. Many outlets across Oman have this system in place to take and process customers orders.

System requires the customer to sign up and sign in to be able to interact with the system. A customer may use the portal as a guest without signing up, but is only able to view catalogues in this case. A customer is able to manage his/her account profile. A customer can browse through catalogues to view different products; customer can also search for a specific catalogue by name or code number. Customer can view the products and can log out without buying. Another main feature of the system is Shopping cart management. Customer can add or remove items in cart. Customer can check which items have been added to cart at any time during the shopping, and can increase or decrease the quantity of items. Once the desired items are added in the cart, customer can place the order which involves payment process. The system provides an interface for the third party payment system to process customer payments. Catalogues management, which includes updating products, is done by the outlet assistant, to maintain system security, assistant is also required to login to be able to use the system. The System administrator is responsible to add outlets, and manage customers and outlets assistants accounts. A marketing manager is responsible to add and manage promotions received from different outlets.

1a) Draw a use case diagram on the basis of case study given above. Your diagram should contain at least 4 actors, 8 use cases, and 2 include and 2 extend relationships

(10 marks)

1b) Your graphical use case representation in 1 a) only presents an overview to your requirements. Provide a highest-level use-case specification considering pre and post conditions and an alternative path for the Place Order use case.

(10 Marks)

1c) Draw a class diagram which consists of at least 4 classes in your system, at least 2 attribute and 3 methods for each class, multiplicity specifications, and other model elements that you find appropriate.

please answer a,b and c. i want submit after 1 houre.