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What is E-R diagram ?
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Answer / umesh gujjar
An Entity-Relationship (E-R) diagram is a specialized
graphic that illustrates the interrelationships between
entities in a database.
ER diagrams often use symbols to represent three different
types of information.
1. Boxes are commonly used to represent entities.
2. Diamonds are normally used to represent relationships
and
3. Ovals are used to represent attributes.
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