Which of the following formations on a line in an E-R diagram means that the relationship need not have an entity of that type?
A) vertical bar
B) arrow
C) double line
D) small oval

Name: Which of the following formations on a line in an E-R diagram means that the relationship need not have an entity of that type? A) vertical bar B) arrow C) double line D) small oval
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Question

Quizplus · Accepted Answer

A small oval in an E-R diagram indicates that the relationship is optional, meaning it does not require an entity of that type.

Which of the Following Formations on a Line in an E-R