The Entity-Relationship (ER) model is a conceptual framework used to visually represent the data structure and relationships within a database. ER models define entities, attributes, and relationships, helping database designers translate complex, real-world scenarios into a clear, structured format that forms the basis for the database schema.

Purpose of ER Models

The ER model provides a visual approach to designing a database by identifying the key entities (e.g., people, items, or concepts), their attributes, and the relationships that connect them