Re: Relational Algebra and Aggregate Functions

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: pgsql-general(at)postgresql(dot)org, Robert James <srobertjames(at)gmail(dot)com>
Subject: Re: Relational Algebra and Aggregate Functions
Date: 2009-07-29 15:55:40
Message-ID: 1248882940.4765.817.camel@jdavis
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On Wed, 2009-07-29 at 10:19 +0300, Peter Eisentraut wrote:
> Is it weird that "Database in Depth" is shorter and easier than "Introduction
> to Database Systems"? And they're by the same author, too.

I agree that it's a little strange. The former is more conceptual and
starts off assuming that you are familiar with things like
normalization. The latter is more like a textbook: more complete and
more formal.

Regards,
Jeff Davis

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