Re: Pre-relational, post-relational, 1968 CODASYL "Survey of Data Base Systems"
From: Kevin O'Kane <okane_at_cs.uni.edu>
Date: Sun, 25 Apr 2004 22:18:04 GMT
Message-ID: <wOWic.9254$eZ5.8673_at_newsread1.news.pas.earthlink.net>
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> "post-relational",
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> documents
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> "Survey
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> systems, and
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> standard,
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> the 35
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> family.
>
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> M and
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>
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> Sweet! I've been tracking down pre-SQL database information and this is
> most helpful. I haven't tracked ADABAS to its origins, but might that be
> somewhere in the pre-relational? I, too, laugh at the "post-relational"
> claims, often used with MUMPS or PICK products (even by companies like IBM
> who ought to know better, eh?).
> --dawn
>
>
Date: Sun, 25 Apr 2004 22:18:04 GMT
Message-ID: <wOWic.9254$eZ5.8673_at_newsread1.news.pas.earthlink.net>
The Pick system is currently marketed by:
which is the current embodyment of the original company.
Dawn M. Wolthuis wrote:
> "Ken North" <knorth2_at_deletethis.yahoo.com> wrote in message
> news:c6h8uh$m5j$1_at_ngspool-d02.news.aol.com...
>
>>It's always amusing to read a description of some DBMSs as
>
> "post-relational",
>
>>or to read that E.F. Codd's 1970 paper about the relational model was the >>genesis of database technology. >> >>"A Relational Model of Data for Large Shared Data Banks", E. F. Codd >>(Communications of the ACM, Vol. 13, No. 6, June 1970) >> >>When cleaning out some old files, I found a folder with vintage-1968
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> documents
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>>related to the CODASYL Data Base Task Group. One of the documents is a
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> "Survey
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>>of Data Base Systems" dated 3 September 1968. It lists 51 database
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> systems, and
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>>identifies another 22 systems not included in the survey. >> >>The systems in that survey are predecessors of the CODASYL database
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> standard,
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>>Codd's relational model, and SQL. Three of those systems have evolved in
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> the 35
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>>years since the survey. >> >>IBM IMS is still in use. Dick Pick evolved GIM-I into the Pick database
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> family.
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>>The Mass General/BBN system evolved and is still available today as MUMPS,
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> M and
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>>Caché.
>
>
> Sweet! I've been tracking down pre-SQL database information and this is
> most helpful. I haven't tracked ADABAS to its origins, but might that be
> somewhere in the pre-relational? I, too, laugh at the "post-relational"
> claims, often used with MUMPS or PICK products (even by companies like IBM
> who ought to know better, eh?).
> --dawn
>
>
-- Kevin C. O'Kane University of Northern Iowa Cedar Falls, IA 50614-0507 (319) 273 7322 (Office + Voice Mail) (508) 778 9485 (Massachusetts) http://www.cs.uni.edu/~okane okane_at_cs.uni.eduReceived on Mon Apr 26 2004 - 00:18:04 CEST