Re: c.d.theory glossary - NULL

From: Laconic2 <>
Date: Wed, 28 Apr 2004 08:45:38 -0400
Message-ID: <>

"Alfredo Novoa" <> wrote in message
> The zero byte is at the physical level and the null at the logical
> level.
> The bit vector is at the physical level and the SQL nulls at the
> logical level.

In this case, it's a distinction without a difference. When the program that does a SELECT
receives a NULL through the SQL interface, that NULL came from somewhere. I'm telling you
where the data that gave rise to the NULL was stored. Received on Wed Apr 28 2004 - 14:45:38 CEST

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