Re: Normalisation
Date: Sat, 02 Jul 2005 07:05:12 GMT
Message-ID: <I0rxe.665$3Y3.400_at_trnddc09>
"Jan Hidders" <jan.hidders_at_REMOVETHIS.pandora.be> wrote in message
news:7wgxe.134978$Nn7.7012386_at_phobos.telenet-ops.be...
> Patsybulo wrote:
You probably meant the Semantic
> Database Model:
>
> Michael Hammer and Dennis McLeod, "Database Description with SDM: A
> Semantic Database Model," ACM Transactions on Database Systems, September
> 1981, pp. 351-386.
>
David Kroenke wrote a textbook called "Database Processing - Fundamentals, Design, & Implementation," in which he gives some coverage of the Semantic Object Model (SOM). SOM, introduced by Kroenke in 1988, basically uses and builds upon the concepts of SDM by Hammer and McLeod, as well as from Codd's "Extending the Relational Model to Capture More Meaning."
The approach is very appealing as an alternative to ER and other semantic models, but I have seen little adoption or coverage since the time I studied it (about six years ago). I've used in professionally for modeling with some degrees of success.
The textbook itself is a very easy read. I imagine that Patsybulo is looking for information concerning semantic (object) models/diagrams in the more general sense, but in the off-chance...
- Dan