Q79
NULL is
A.
the same as 0 for integer
B.
the same as blank for character
C.
the same as 0 for integer and blank for character
D.
not a value
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
NULL in SQL is used to represent missing or unknown data. It is not the same as 0 for integer or blank for character. In fact, NULL is not a specific value, but rather an absence of a value or a placeholder for missing data.
So, the correct answer is Option D: not a value.