The diamond shape represents this Inventory System ERD Example. This will establish the relationships between entities. This is typically done through a primary key to a foreign key connection. Inventory, Payment, Purchasing, and Supplier entities have been normalized to reduce record duplication. For faster query execution, we have implemented indexing on each table of the Inventory Management System. To maintain efficient stock levels, this inventory management system can also be used to keep track of product quantity, price entity, and the item that needs to be ordered from the motorcycle replacement parts supplier. It can also track which product parts are in high demand and are still available.