An entity may be defined as a thing capable of an independent existence that can be uniquely identified. An entity is an abstraction from the complexities of a domain. When we speak of an entity, we normally speak of some aspect of the real world that can be distinguished from other aspects of the real world.
Following are examples of ERD diagrams made in each system.
TWO RELATED ENTITIES
An entity is a thing that exists either physically or logically. An entity may be a physical object such as a house. An event such a customer transaction or order as logically.
DO YOU UNDERSTAND WHAT WE DO?
YES! A relationship captures how entities are related to one another. Relationships can be thought of as verbs, linking two or more nouns.