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From: "Yasuo Ohgaki" <yasuo_ohgaki@hotmail.com>
To: "Sunit Bhatia" <bhatia_sunit@hotmail.com>
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Subject: Re: Data Versioning
Date: Thu, 2 Aug 2001 11:13:01 +0900
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> Does any body know if pgsql supports any kind of versioning of
binary
> objects or data. e.g. If I'm storing a binary file in a row of a
table, I
> would want to see different versions of the same biary file.
Everytime I do
> a write, the version number should be bumped up !!

With PostgreSQL, you can create RULE to keep old values.
(Much easier than other DB, thanks to RULE)
Refer to PostgreSQL manual for details.

Yasuo Ohgaki