Hi all

  Onmibase also supports class evolution.
 best regards 
  mdc
--- goran.krampe at bluefish.se wrote:
> Trygve Reenskaug <trygver at ifi.uio.no> wrote:
> > ODMG (and Magma) seem to block application
> evolution by storing the binary 
> > objects so that class definitions can't change. It
> will be difficult to use 
> > them in critical applications if this is correct.
> > 
> > Cheers,
> > --Trygve
> 
> This is not true AFAIK. GemStone/S for example
> handles multiple class
> versions (at the same time) allowing lazy migration
> of instances. This
> is AFAIK a much more advanced and flexible approach
> than RDBs offer.
> 
> And Magma seems to be following GemStone in this
> respect:
> 
> 	http://minnow.cc.gatech.edu/squeak/5602
> 
> I think most OODBs have some form of schema/class
> evolution facilities.
> 
> regards, Göran
> 
> 

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