10+ Design Er Diagram Conditional Relationship Example Download Zip PNG. An entity is represented as rectangle in an er diagram. An er diagram shows the relationship among entity sets.
So you want to learn entity relationship diagrams?
Can also be applied in the inverse. They are created when a new system is being designed so that the development team can understand how to. An er diagram shows the relationship among entity sets. With smartdraw, you can create more than 70 different types of an entity relationship diagram (erd) shows the relationships of entity sets stored in a database.