Re: Jim Gray article on Next Generation Databases
> 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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