There are three kinds of ERDs used in industry, conceptual, logical and physical. This video describes the differences between them and when each should be used.
Please note that different designers may use alternative terminologies or use the diagrams in a slightly different way - that's the world of DB design for you. However, they will all follow the generality of what is presented here.
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Types of ERDs |
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| Education | Upload TimePublished on 20 Sep 2018 |
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