Modelling Business Information: Entity Relation... -

Introduces specific attributes, primary keys, and foreign keys, mapping out operational data rules without being database-specific.

Defines the high-level business scope and key concepts, focusing on business vocabulary rather than technical detail. Modelling Business Information: Entity relation...

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

An Entity-Relationship Model, or ER Model, is a conceptual representation of data that typically evolves through three stages: conceptual, logical, and physical. and foreign keys

Countable objects, concepts, or events, such as Customer , Product , or Order .