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What is Understanding ER Models and Diagrams about?
The document discusses different data models used in database design including conceptual, logical, and physical models. The conceptual model provides a broad view of important entities and relationships without attributes or keys. The logical model contains more details like attributes and primary keys. The physical model represents how data is stored in database tables, specifying columns, constraints, and foreign keys to represent relationships. It may differ from the logical model depending on the datab
- Author
- Ikawa Afue
- Language
- EN