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
An Entity-Relationship Model, or ER Model, is a conceptual representation of data that typically evolves through three stages: conceptual, logical, and physical. Modelling Business Information: Entity relation...
Defines the high-level business scope and key concepts, focusing on business vocabulary rather than technical detail. Provides enough detail for database developers to build
Specific properties describing an entity, such as Customer Name or Product Price . Defines the high-level business scope and key concepts,
The associations between entities, such as a Customer "places" an Order .
Countable objects, concepts, or events, such as Customer , Product , or 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
