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Re: Jim Gray article on Next Generation Databases

• To: <xml-dev@l...>,"Peter Hunsberger" <peter.hunsberger@g...>
• Subject: Re: Jim Gray article on Next Generation Databases
• From: "Ken North" <kennorth@s...>
• Date: Wed, 4 May 2005 23:05:13 -0700
• References: <4277EFB2.70501@d...> <200505041432.54216.david.lyon@c...> <000a01c55068$5418a7d0$1601a8c0@DURANTE> <200505041546.42687.david.lyon@c...> <4278D55D.3080001@d...> <e3a5cb2c05050411477dc9b573@m...> <000a01c5511f$66e24cb0$1601a8c0@DURANTE> <cc159a4a0505042022472ff99@m...>

> Other examples of database integrated into the OS
>
> Microdata Reality (1974) -- first minicomputer to do this
> IBM System 38 (1978) -- ancestor of the AS/400.
>
> If I remember correctly, Microdata used a microprogrammable instruction set
for
> the Reality. (Microcode implemented data management operators as part of the
> machine's instruction set.)

Peter Hunsberger wrote:
>> At the time I hadn't been able to come up with any other hardware based data
management, but then again, I was only peripherally aware of the
Microdata.  How is that you stumbled across it?

When Dick Pick and Don Nelson worked for TRW, they were the architects of a DBMS
named GIM that ran on IBM mainframes. After Pick left TRW, he formed a company
and struck a deal to port the DBMS to Microdata minicomputers. About the time
Pick and Associates were working on the Reality port, my task was to develop a
paging solution for GIM that would work with demand-paged virtual memory being
introduced by IBM.

About a year later, our lab took delivery of a rare computer called a Nanodata
QM-1. It was used for microprogramming R&D and designing new hardware. (One of
the early projects was a Concurrent Pascal machine.)

Microdata Reality was the pre-cursor to the Pick OS, another operating system
with a tightly-integrated DBMS.


======== Ken North ===========
www.WebServicesSummit.com
www.SQLSummit.com
www.GridSummit.com

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