Here is an ER diagram about the school system and how to manage the examination at school. An Entity Relationship Diagram (ERD) shows how entities (such as people, objects or concepts etc.) relate to each other in a particular system. Generally, an ERD does not define business processes, but graphically displays business data patterns. In this case, the entity can be regarded as a noun and the relation can be considered as a verb. Learn more details from this diagram, or try to make yours with ease now.
