This ERD for the Sales and Inventory System depicts all the visual instruments of database tables and the relationship between the customer, sales, inventory, supplier, and so on. In the ER diagram, structured data was used for sales and purchases and to manage the relationship between structured data groups of sales and inventory management system functionalities. The major entities of the sales and inventory management system are inventory, purchasing, payment, and supplier. One-to-one relationships exist between payments, sales, suppliers, and inventory.
