Multiple choice technology databases

Teradata Basic concepts dictate that a Primary Key can be NULL

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

By definition in Teradata and all relational databases, a Primary Key column cannot contain NULL values. The entire purpose of a primary key is to uniquely identify each row, and NULL represents an unknown value that cannot serve as an identifier. Therefore, the statement is false.

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