At 04:15 PM 19/05/2006, Kjell Rilbe wrote:

>But the key here is that NULL means unknown (to others than the wallet
>owner in the above example). So, to the wallet owner, the amount of
>money in his/her wallet is NOT NULL (unless he/she hasn't counted it for
>a while...), but to the rest of the world, it's NULL.

I never carry anything but NULL in my wallet. When it gets too heavy
to carry, I poke it all into my piggy bank (which was designed to
carry NULL) and set my wallet to zero. It always amazes me how
quickly it gets to be NULL again.

./heLen