A diagram that illustrates the structure of a database is called an entity relationship diagram, or ERD for short. In order to design a successful ERD, you’ll have to keep in mind the three factors of one: entities, relationships and attributes. Before you design an ERD, however, you’ll first need to know how to identify, assess and diagnose a system’s problem. Afterwards, you can draw up an ERD that will help lead to a successful solution. To learn about entity relationship diagram in an easy-to-follow, beginner’s erd tutorial. Click here to learn ERD from scratch.