Nullology of empty strings

From: Morten <usenet_at_kikobu.com>
Date: 7 Jan 2003 03:51:27 -0800
Message-ID: <75db36f2.0301070351.3cd43474_at_posting.google.com>

Hi. I'm curious about why the empty string '' IS NULL in Oracle databases. Is this a general convention? Where can I read up on the theory behind this?

I would like to find out why this is so, and what the theoretical foundations are (relational calculus possibly?)

Thanks,

Morten Received on Tue Jan 07 2003 - 12:51:27 CET