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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...
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Basic Econometrics
Authors: Damodar N. Gujrati, Dawn C. Porter
5th edition
73375772, 73375779, 978-0073375779
