A underlined ellipse symbol is ER digram denotes __________ .
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An ellipse with underlying lines represents Key Attribute.
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An "underlined ellipse symbol" is ER diagram denotes multi-valued attribute.
Explanation:
In an ER diagram, the ellipse symbol represents an attribute. The attribute can take multiple values. This attributes occupy large amount of memories and slow down the process. It sometimes changes the representation of the data.
An example for multi-valued attribute is a phone number as a person can have more than one contact number and hence it is considered as a multi-valued attribute.
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