Develop an Entity Relationship model preparation staff $($chef$)$ and finalize the customer$$s bill. The Food preparation staffs $($Chefs$),$ with their touch$-$display interfaces to the system, are able to view orders sent to the kitchen by waiters. During preparation, they are able to let the waiter know the status of each item, and can send notifications when items are completed. The system should have full accountability and logging facilities, and should support Supervisor actionsto account for exceptional circumstances, such as a meal being refunded orwalked out on$.$