Re: Jim Gray article on Next Generation Databases
>> I recall Pick (though I wouldn't have made the connection); if I remember correctly they had implementations on various pieces of hardware, including IBM BM which was where I mainly worked at the time. .. Peter Hunsberger wrote: >>> The real question was the possibility of hardware/microcode assist ? The GIM DBMS was developed using a machine-independent macro language designed for data management operations. The first implementation was 32-bit IBM mainframes, but there were ports to 36-bit Univac mainframes for NASA and 16-bit PDP-11s for the CIA. The port to Microdata hardware by Pick and Associates was the first time the instruction set was implemented in firmware. The other ports had been done via software -- creating a library containing macros that expanded into the native instruction set of the target hardware. Pick and Nelson conceived the DBMS, query language and machine-independent data management operators in 1965, shortly before Richards developed the BCPL and INTCODE (intermediate code) at Cambridge. That was about a decade before Ken Bowles and his students came up with the UCSD P-System. ======== Ken North =========== www.WebServicesSummit.com www.SQLSummit.com www.GridSummit.com
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