Re: The relational model and relational algebra - why did SQL become the industry standard?
Date: Sat, 15 Feb 2003 22:29:48 GMT
"David Cressey" <info_at_dcressey.com> writes:
> My recollection was that is was to compete with IBM. DB2 used SQL,
> and it was easier to sell Rdb if the people who already knew SQL
> didn't have to learn something else. This is the way most "de
> facto" standards come into being.
there was significant resistance from STL to system/r. some of the arguments were hierarchical vis-a-vis relational .... but probably as vociferous was arguments regarding physical pointers vis-a-vis indexes (i.e. that the indexes doubled the physical space).
so the technical transfer went from sjr to endicott ... aka from system/r to sql/ds (i was responsible for some from sjr to end). it was later that there was technology transfer from endicott back to STL ... aka sql/ds to db2. one of the people in the following meeting handled much of the endicott->stl transfer: http://www.garlic.com/~lynn/95.html#13
multics first commercial rdbms:
teradata, ingres, relational tech, britton-lee, sybase, m'soft http://www.mcjones.org/System_R/SQL_Reunion_95/sqlr95-Teradata.html
shoot-out at the ok corral
.... note: quibble in the shoot-out tail mentioned above with regard to compare-and-swap instruction and locking. compare-and-swap instruction was the work of person in cambridge science center who's initials are CAS ... and the choice of the instruction mnemonic ... so then needed to come up with inustruction name that matched his initials.
random past posts rf: system/r:
http://www.garlic.com/~lynn/aadsm13.htm#8 OCSP and LDAP http://www.garlic.com/~lynn/2000.html#18 Computer of the century http://www.garlic.com/~lynn/2000b.html#55 Multics dual-page-size scheme http://www.garlic.com/~lynn/2000e.html#49 How did Oracle get started? http://www.garlic.com/~lynn/2000f.html#16 [OT] FS - IBM Future System http://www.garlic.com/~lynn/2001d.html#44 IBM was/is: Imitation... http://www.garlic.com/~lynn/2001i.html#32 IBM OS Timeline? http://www.garlic.com/~lynn/2002.html#10 index searching http://www.garlic.com/~lynn/2002e.html#26 Crazy idea: has it been done? http://www.garlic.com/~lynn/2002e.html#44 SQL wildcard origins? http://www.garlic.com/~lynn/2002g.html#58 Amiga Rexx http://www.garlic.com/~lynn/2002g.html#59 Amiga Rexx http://www.garlic.com/~lynn/2002g.html#60 Amiga Rexx http://www.garlic.com/~lynn/2002g.html#76 Pipelining in the past http://www.garlic.com/~lynn/2002h.html#17 disk write caching (was: ibm icecube -- return of http://www.garlic.com/~lynn/2002i.html#69 Hercules and System/390 - do we need it? http://www.garlic.com/~lynn/2002k.html#9 Avoiding JCL Space Abends http://www.garlic.com/~lynn/2002l.html#71 Faster seeks (was Re: Do any architectures use instruction http://www.garlic.com/~lynn/2002n.html#36 VR vs. Portable Computing http://www.garlic.com/~lynn/2002o.html#54 XML, AI, Cyc, psych, and literature http://www.garlic.com/~lynn/2002q.html#32 Collating on the S/360-2540 card reader?
topic drift re compare and swap:
http://www.garlic.com/~lynn/93.html#14 S/360 addressing http://www.garlic.com/~lynn/94.html#45 SMP, Spin Locks and Serialized Access http://www.garlic.com/~lynn/97.html#19 Why Mainframes? http://www.garlic.com/~lynn/98.html#8 ** Old Vintage Operating Systems ** http://www.garlic.com/~lynn/98.html#16 S/360 operating systems geneaology http://www.garlic.com/~lynn/99.html#89 FIne-grained locking http://www.garlic.com/~lynn/99.html#176 S/360 history http://www.garlic.com/~lynn/99.html#203 Non-blocking synch http://www.garlic.com/~lynn/2000e.html#25 Test and Set: Which architectures have indivisible instructions? http://www.garlic.com/~lynn/2000g.html#16 360/370 instruction cycle time http://www.garlic.com/~lynn/2001b.html#35 John Mashey's greatest hits http://www.garlic.com/~lynn/2001f.html#41 Test and Set (TS) vs Compare and Swap (CS) http://www.garlic.com/~lynn/2001g.html#9 Test and Set (TS) vs Compare and Swap (CS) http://www.garlic.com/~lynn/2001k.html#8 Minimalist design (was Re: Parity - why even or odd) http://www.garlic.com/~lynn/2001k.html#12 Minimalist design (was Re: Parity - why even or odd) http://www.garlic.com/~lynn/2001k.html#66 SMP idea for the future http://www.garlic.com/~lynn/2001k.html#69 Programming in School (was: Re: Common uses...) http://www.garlic.com/~lynn/2002f.html#13 Hardware glitches, designed in and otherwise http://www.garlic.com/~lynn/2002h.html#45 Future architecture [was Re: Future micro-architecture: ] http://www.garlic.com/~lynn/2002h.html#46 Future architecture http://www.garlic.com/~lynn/2002h.html#55 Future architecture [was Re: Future micro-architecture: ] http://www.garlic.com/~lynn/2002h.html#87 Atomic operations redux http://www.garlic.com/~lynn/2002i.html#82 HONE http://www.garlic.com/~lynn/2002l.html#69 The problem with installable operating systems http://www.garlic.com/~lynn/2002p.html#58 AMP vs SMP http://www.garlic.com/~lynn/2003b.html#20 Card Columns
-- Anne & Lynn Wheeler | http://www.garlic.com/~lynn/ Internet trivia 20th anv http://www.garlic.com/~lynn/rfcietff.htmReceived on Sat Feb 15 2003 - 23:29:48 CET