As per the graduation project ER diagram, an entity is an object or component of data -- an entity is represented as a rectangle in an ER diagram. For example, we have multiple entities in the following ER diagram, like Server, Database, Client, Cache Manager, Event Queue Handler, and more. These entities have many relationships with each other. Graduation Project ER Diagram suggests that the entity-relationship diagrams or ER diagrams are used to showcase the relationships developed between objects or entities in a system. Also known as the entity-relationship model, this flowchart is used in various fields such as research, education, business information system, or software engineering. Use EdrawMax Online to create a similar ER diagram for your college's graduation project.