Relation... — Modelling Business Information: Entity

The associations between entities, such as a Customer "places" an Order .

Defines the numerical context of relationships, such as One-to-One (1:1), One-to-Many (1:N), or Many-to-Many (M:N). The Three Levels of Data Modelling Modelling Business Information: Entity relation...

Provides enough detail for database developers to build the actual system, including technical data types. Benefits of Entity-Relationship Modeling What is an Entity Relationship Diagram (ERD)? - Lucidchart The associations between entities, such as a Customer

Countable objects, concepts, or events, such as Customer , Product , or Order . The associations between entities