This Entity-Relationship Diagram (ERD) models a database for a pizza delivery service. It organizes key components of the business, including customers, orders, employees, vehicles, and pizzas, into interconnected tables.

A Point of Sale or Point of Service is generally a machine which calculate the amount of item/services a customer owed to the trader. A customer can pay in cash or via a credit card.

University Management System promotes a culture of paperless University. The day to day administration and most of the University procedures are carried out online. The University Management System (UMS)

Point of Sale Entity Relationship Diagram (ERD) Sample.

A Database is required to support an Online school system which should be so generic that any number of schools in an area, (eg Town/country/world) can register to use the System.