A supply chain entity-relationship (ER) diagram shows that a supply chain is defined as the entire process of making and selling commercial goods, including every stage from the supply of materials and the manufacture of the goods through to their distribution and sale. The below supply chain ER diagram is a graphical approach to database design. It can be designed or created using EdrawMax as it has free templates that make the procedure very compatible. At the same time, an affiliation exists between various qualities of an element. A relationship between two properties demonstrates that the estimations of the related characteristics are associated.