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Re: Extending my question. Was: The relational model and relational algebra - why did SQL become the industry standard?

From: Bernard Peek <bap_at_shrdlu.com>
Date: Wed, 19 Feb 2003 17:37:38 +0000
Message-ID: <sfBA52PiD8U+EwED@shrdlu.co.uk>


In message <3E5325DD.8040802_at_earthlink.net>, Jonathan Leffler <jleffler_at_earthlink.net> writes

>Assuming the existance of a table (real or virtual) that contains the
>integer values (at least from 1 through 5), then it is possible and
>fairly simple. The hypothetical table is: INTEGERS, and contains a
>single column, N, of type INTEGER.

I recall working with a database that had several such tables. The DBMS was Image running on an HP3000. The tables were designated "Automatic Masters" in the schema, and were the source of sequential numbers such as invoice-numbers and line-numbers on an order.

-- 
Bernard Peek
bap_at_shrdlu.com
www.diversebooks.com: SF & Computing book reviews and more.....

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Received on Wed Feb 19 2003 - 11:37:38 CST

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