For the past 35 years, the entity-relationships (ER) model has been in use. The database administrator can use the ER model to help them identify the exact relationships among entities by using different attributes.

Because of its simplicity and abstract features, it's well suited for data modeling in many businesses. To examine the company's entire structure, the Entity Relationship Diagram is used. The company database ER Diagram illustrates the exact relationships among entities and their attributes to facilitate communication.

This company database ER Diagram is helpful when:

Many departments can be found in your company.

There are many locations in every department.

There are many names and locations for different departments.

There are many projects associated with each department.

Employees can also be identified by a unique id and address.

An employee works in one department but is responsible for multiple projects.

Each employee has their own dependence.