Can you re-imagine your problem as objects instead of thinking of the
database or do you have other code accessing SQL directly?

Mark

On 11 May 2011 20:14, Michael Gargano <[email protected]> wrote:
> I was just talking to David Holt about this and he suggested I tap the brain 
> trust.  :)
>
> I was wondering if there is a database design pattern for a situation where I 
> have some template structure
> let's say
>
>        tA <->> tB <->> tC  (records across these tables are the template, the 
> template is a whole object graph rooted at one record in tA)
>
> where the templates can be configured on a per tenant basis (so, the 
> templates themselves are records that define defaults and new ones can be 
> added when new tenants or templates are added).  I need to make a copy of a 
> template that a tenant uses and make it local to a user (under that tenant) 
> who can then customize the values in that template for their needs.
>
> It's basically a class/instance kind of structure, but at the data level in 
> the database.  It's as if I need to copy an EOs from one table to another 
> where the destination table has a few more attributes than the source table 
> did.  It's made more complicated by the fact that I need to copy that 
> template object graph, not just one EO.
>
> Any suggestions?
> *Hopes beyond hope*
>
> Thanks.
> -Mike
>
>
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-- 
Dr. Mark Wardle
Specialist registrar, Neurology
Cardiff, UK
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