Draw a class diagram for online inventory management system

2. Online inventory tracker As our warehouseman, there are many stocks on the storage and having problems finding and monitoring certain items This project is to create a web application that will create multiple inventories whether it is for a different department, different items, different lecturers, or different uses. The user permission will be based on what he can and can't do or see. Permission will be based on his/her role, item, location, event types, and areas. The system will use a barcode scanner and can be paired with a socket mobile scanner. Each item is associated with an image and can be uploaded from the computer or taken and uploaded using the mobile app. The system can filter, search, generate a report, primaseller and share the inventory data from/to the user