Which symbol denote derived attributes in ER Model?
2017
Which symbol denote derived attributes in ER Model?
- A.
Double ellipse
- B.
Dashed ellipse
- C.
Squared ellipse
- D.
Ellipse with attribute name underlined
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Correct answer: B
In the Entity-Relationship (ER) model, derived attributes are represented using a dashed ellipse. This distinguishes them from regular attributes (solid ellipse) and multivalued attributes (double ellipse). The dashed line indicates that the attribute's value is calculated or derived from other attributes.
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