Re: The relational model and relational algebra - why did SQL become the industry standard?

From: Anton Versteeg <>
Date: Mon, 10 Feb 2003 11:02:50 +0100
Message-ID: <>

There were some attempts to create RDBMS's that were more like relational algebra. IBM had a RDBMS in the 80's called BS12 (the 12 relational operators from Codd). See article by Hugh Darwen:

"Amund Trovåg" wrote:

> Hi all DB-theorists! :)
> I am currently trying to work out why SQL and not relational algebra became
> the industry standard in 1986(I think it was). Is this because of the more
> "technical" language of rel. algebra and the difficulty in creating
> universal queries, or is it something else?
> I am a student at a master's program in information science, and I am trying
> to see if there is a reason for doing my dissertation on something that
> involves making relational algebra more usable, by e.g. making new
> operators. Right now I am trying to figure out why relational algebra is a
> dead language.
> Thanks in advance for any help and pointers.
> regards,
> Amund Trovåg

Anton Versteeg
DB2 Specialist
IBM Netherlands
Received on Mon Feb 10 2003 - 11:02:50 CET

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