Reference no: EM13332729

Online shopping becomes increasing popular nowadays. It brings many advantages to both sellers and buyers. Metro Shopping (MS) is planning to develop an online shopping system for the stakeholders as to provide many services and benefits to its members and staff after registration. Currently, during the sales promotion to MS members, MS staff manually handle the purchasing information with the use of basic office software such as Microsoft Office Word and Excel. It may results in having mistakes easily and the process is very inconvenient. As a result, MS needs an online shopping system at their MS Intranet. Therefore, MS Online Shopping System is to be developed based on the requirements of users which has the following five (5) key features:

• To provide a user-friendly online shopping cart function to members and to replace hardcopy ordering form;
• To store inventory and sales information in database, to reduce human mistakes, increase accuracy and enhance the flexibility of information processing;
• To provide an efficient inventory system which can help the MS staff to gain enough information to update the inventory;
• To be able to print invoices to members and print a set of summary reports for MS's internal usage;
• To design the system that is easy to maintain and upgrade.

Members will use their member IDs and passwords to login the system. Once a member logs into the system, it identifies the type of the member, which is Ordinary, VIP or Organisation. The authorities are granted to the member based on the type of the member. A main menu displays all the following functions for all members:

• Going shopping - The system provides a searching function on products based on the product types and brand names, and shows the inventory status to members. Members can place their order through the online shopping cart. To make purchase, a member can select the Going Shopping function in the main menu and the system will list down all the product types. When the member selects one product, he can view the detailed description of a product. In this page, he can input the purchase quantity and select the pick-up location and time, and subsequently press the "Add to Cart" command. Then, the member can view his selected items in his shopping cart. If the member has decided to place an order, he needs to check out, view the invoice and select the payment method. On the other hand, the member can also cancel his order at his view order page.

• Shopping History - Members can review their shopping history, ordering history and invoices and cancellation made.
• Change Password - It allows the members to change their passwords.
• Contact Us - Members can contact of the system administrator for assistance.
• Logout

Assuming that you are a Project Manager for the MS Online Shopping System, you are required to develop a design using object-oriented approach which include the following:

(a) Use Case Diagram
(b) Activity Diagram
(c) Sequence Diagram