Following is an ER diagram for an online food ordering system. The diagram illustrates how various entities interact and their respective responsibilities inside the management system. The following system has various entities which involve the order, the customer, the restaurant, the delivery boy, and the payment.Here an entity is represented using a rectangular box, with the name of the entity listed inside it. The attributes associated with each of the entity are represented using oval shapes joined with their respective entities. The relationship among the entities is represented diamond-like shape
