An E-R diagram includes five basic symbols.Which one denotes an optional relationship between entity classes?
A)Dotted line
B)Circle
C)Triangle
D)Straight,vertical symbol ( | )

Name: An E-R diagram includes five basic symbols.Which one denotes an optional relationship between entity classes? A)Dotted line B)Circle C)Triangle D)Straight,vertical symbol ( | )
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Question

Quizplus · Accepted Answer

In an E-R diagram,an "O" is used to denote a zero or optional relationship.

An E-R Diagram Includes Five Basic Symbols