Question: What is the difference between a conceptual, a logical, and a physical data model? Where do relationship diagrams (RDs) and entity/relationship diagrams (ERDs) fit in?

What is the difference between a conceptual, a logical, and a physical data model? Where do relationship diagrams (RDs) and entity/relationship diagrams (ERDs) fit in?

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The difference between conceptual logical and physical data models lies in their level of abstraction scope and implementation details Relationship diagrams RDs and entityrelationship diagrams ERDs ar... View full answer

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