Question : In an E-R diagram , ellipse represents
Option 1: relation
Option 2: entity
Option 3: fields
Option 4: key
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Correct Answer: entity
Solution : The correct option is entity.
In an Entity-Relationship (E-R) diagram, an ellipse represents an entity. A real-world object or concept, such as a person, place, thing, or event, that can be uniquely identified, is represented as an entity in a database. Entities in a database for a library might include things like books, authors, and borrowers, for instance. Every object has characteristics that describe them.
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