ER diagram represents the database schema of an online e$-$commerce platform. Customers $($CustomerID$,$ FirstName, LastName, Email$)$ can place orders $($OrderID$,$ OrderDate, TotalAmount$),$ and each order consists of multiple products. Products $($ProductID$,$ ProductName, Price, StockQuantity$)$ can be supplied by different vendors $($VendorID$,$ VendorName, ContactInfo$).$ The relationships between entities illustrate the connections between customers, orders, and products.