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Explain any three components of E-R diagram. |
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Answer» The three main components of E-R diagram are Entity, Attribute, and Relationship. 1. Entity: An entity is a person, place, thing or event for which data is collected and maintained. 2. Attribute: An attribute is the characteristic property of an existing entity. 3. Relation: A relation is defined as a set of tuples that have the same attributes. A relation is usually described as a table, which is organized into rows and columns. |
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