What does NULL mean?
a. The value NULL means UNKNOWN
b. The value NULL means '' (empty string)
c. The value NULL means ' ' (space character)
d. The value NULL means ZERO
Answer: A
What does NULL mean?
a. The value NULL means UNKNOWN
b. The value NULL means '' (empty string)
c. The value NULL means ' ' (space character)
d. The value NULL means ZERO
Answer: A