ER diagram is a graphical representation method for describing entities and their relationships . In the data-driven era, entity-relationship diagram (ER diagram) is a core tool for data modeling, which is very important for understanding, designing and Optimizing the database structure is crucial. This article will explain what an ER diagram is and how to use the ProcessOn tool to draw a professional ER diagram.

ER diagram (Entity-Relationship diagram) is a tool used for database design. It shows the structure and relationship of data in a graphical way. For beginners, understanding ER diagram is the first step to master database design. Today, ProcessOn editor will show you the basic concepts, components and applications of ER diagram.