A null value in a column may indicate that there is an appropriate value for that attribute,and although the value is known,no one has entered the value into the database.

Question

Quizplus · Accepted Answer

This statement is true. Null values in a column indicate that no value has been entered for that attribute, and it is possible that an appropriate value exists but has not been entered into the database.

A Null Value in a Column May Indicate That There