Old DB systems (was Re: What's Wrong With ORM)

Dirk Koopman djk at tobit.co.uk
Fri Mar 24 16:47:50 GMT 2006

On Fri, 2006-03-24 at 17:29 +0100, Robin Berjon wrote:
> Hi,
> On Mar 24, 2006, at 16:32, Nigel Hamilton wrote:
> > It seems like eons ago that programmers suffered from limited  
> > diskspace ... back then normalisation was required to break things  
> > into multiple 'related' tables to avoid data being repeated. Thanks  
> > also to the tyranny of disk seek times and the need for indices the  
> > relational model was born along with the database management  
> > systems to police it.
> As it happens, I'm now looking into working on a project for which  
> knowledge of how DBs of the old days (say C-ISAM) worked internally  
> would be useful. Does anyone here happen to have pointers, knowledge  
> to share, etc.? It's all fun and games to have loads of disk space,  
> RAM, CPU, and whatever else until you try to work with a feature  
> phone :)

I can help you here, if you like. I have used C/D-Isam for several
years, I have some perl interfaces that could be bent to access them as


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