The ER diagram for an eCommerce website demonstrates how it caters to data used in e-commerce management activities through database design (ERD). It reveals the database relationships between the entities of the website. This demonstrates the logical structure of databases by identifying entities, their properties, and their interactions. The database design for the E-commerce Website ER Diagram is sketched out. This ER Diagram for an E-Commerce Website comprises entities, attributes, and relationships. This ER Diagram is a graphical representation of the relationships between all System entities. The ER Diagram is used to design and troubleshoot the system's relational database. It is most effective when used with DFD (Data Flow Diagram), which is in charge of data movement.