This Entity Relationship Diagram Example depicts real-world scenarios as entities. The properties of these entities are represented as attributes in the ER diagram, and their connections are defined as relationships. This is a hospital ER model. Patients, Tests, and doctors are the entities represented by rectangular boxes. A diamond-shaped box represents the relationships between different entities. A database is an essential component of all software systems. Using the ER Diagram fully in database engineering ensures you produce high-quality database designs for database creation, management, and maintenance. An ER model also allows for communication.
