What kind of attribute is assigned to an attribute when no other value applies or when a value is unknown?
A)Single-valued attribute
B)Multi-valued attribute
C)Derived attribute
D)Null-valued attribute

Name: What kind of attribute is assigned to an attribute when no other value applies or when a value is unknown? A)Single-valued attribute B)Multi-valued attribute C)Derived attribute D)Null-valued attribute
Brand: Quizplus
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Question

Quizplus · Accepted Answer

This is the definition of null-valued attribute.

What Kind of Attribute Is Assigned to an Attribute When