Modelling Business Information: Entity Relation... (2026)

Modelling Business Information using Entity-Relationship (ER) diagrams is a foundational technique for defining the structure, relationships, and rules of data within an organization . It acts as a bridge between business requirements and technical database design, enabling stakeholders to visualize the "things" (entities) a business cares about and how they interact. Core Components of ER Modelling

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 . The associations between entities, such as a Customer

Introduces specific attributes, primary keys, and foreign keys, mapping out operational data rules without being database-specific. Provides enough detail for database developers to build

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

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