2007-12-12 15:16:01 · 4 answers · asked by Anonymous in Computers & Internet ➔ Software
a null is no value . It is not 0 because 0 is a value.
There is often a keyword like NULL or NOTHING that can be used , or for string values string = "" is used .
2007-12-12 15:22:00 · answer #1 · answered by mark 6 · 1⤊ 0⤋
Be careful there...
NULL is not the same as zero. ZERO is a value. NULL is lack of a value.
Let's say you have a variable A, and you have a statement,
if a=0 then
true
else
false;
If A has ZERO in it, the result will be true. However, if A has NULL, it will be false. Since NULL is lack of value, it cannot equal to any value, including zero or even itself.
2007-12-12 15:26:08 · answer #2 · answered by tkquestion 7 · 0⤊ 0⤋
Yes null is a term for nothing or zero, they can be used interchangeably
2007-12-12 15:21:54 · answer #3 · answered by Andy W 1 · 0⤊ 2⤋
null=nothing
2007-12-12 15:23:19 · answer #4 · answered by steve 2 · 0⤊ 0⤋