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A week ago
Which of the following is not true about a NULL attribute?

• On insertion, entering the data for that field is optional.

• It is an important property of an attribute.

• It must have a default value specified.

• A primary key can't be NULL.
Source  Download Study Guide
Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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wrote...
A week ago
It must have a default value specified.
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