design diagram

Scenario Supply Chain Management System (SCM) is commonly used by most medium to big companies such as hypermarkets, petrol stations and others in this country and worldwide. Each company allows the customer/cashier made a purchase transaction via electronic point of sale (ePOS) that record the purchase and automatically send the information to central system that manage inventory to automatically redirect the reorder to the suppliers. You are required to design a SCM system by preparing the following: iv. A class diagram for the system; vi. Any design diagram to illustrate the architecture of the system.