Draw the Entity Relationship Diagram ERD for a restaurant management system.

(3) Draw the Entity Relationship Diagram ERD for a restaurant management system. It helps the restaurant manager to computerize meal ordering, billing and inventory control. It helps the restaurant manager to know the number of customers for a particular time interval, the manager can decide whether more waiters and chefs are required. (4) Draw an activity diagram for an inventory management system. It monitors the stocked products, whether those products are company assets, raw materials and supplies, or finished products ready to be sent to vendors or end consumers.