Thanks! I've just checked that up.

Actually, db-constraints lib doesn't play well in distributed  
environment, where tables are located anywhere on the LAN in the  
separate repositories. As far as I know, Oracle supports foreign key  
constraints across distributed tables, but MySQL and PostgreSQL do  
not. Also, I run tests using in-memory SQLite, which doesn't seem to  
support foreign key constraints.

Anyway, it seems to be a right thing to keep that code in dm- 
constraints library and also be able to switch off DB-level constraints.
Wdyt?

On 09.11.2008, at 5:31, Dan Kubb (dkubb) wrote:

> Oleg, we actually created the dm-constraints plugin for precisely this
> functionality. Currently it will create some DB level constraints, but
> the plan was to make it create code level constraints always, and then
> DB level constraints if the storage engine supports it.  That way
> there's two levels of protection on the data.  It's also really nice
> for testing because if you forget and delete a parent before a child,
> it will blow up and tell you.


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