Re: Incremental development

On Fri, 2006-01-13 at 13:08 +0000, Aidan Slingsby wrote:
> When a new method is added to an ozone object, existing persistent instances
> in the database no longer work.  If there a way of easily updating all the
> instances in the database to the new class definition, or can this only be
> done by keeping the old class definition too and create new instances of the
> new class, copying the data over and deleting the old ones (or using XML or
> ASCII export/import)?  With relational databases, it is relatively easy to
> change table design without corrupting the data - can this be the case in
> Ozone too (if I do something differently).

What exactly do you mean by 'no longer work'?



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