DBMS · Question 19 · Easy
In an ER diagram (Chen notation), how is a multivalued attribute such as a person's phone numbers drawn?
- Dashed ellipse
- Double ellipse
- Double rectangle
- Diamond
Answer and explanation
Answer: B. Double ellipse
Explanation: A double ellipse marks a multivalued attribute. A dashed ellipse is a derived attribute, a double rectangle is a weak entity set, and a diamond is a relationship.
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