Re: Help with this db design
Re: Help with this db design
- Subject: Re: Help with this db design
- From: Art Isbell <email@hidden>
- Date: Sat, 22 Mar 2008 21:11:11 -1000
On Mar 22, 2008, at 7:09 PM, Guido Neitzer wrote:
So add a unique constraint on the database level (to be safe) and
check for this condition in code (validateForSave) before saving to
the database.
Just use a compound primary key like a join entity, both being
propagated from the entities in the many-to-many relationship. This
applies the desired constraint without needing to actually add an
explicit constraint to the DB.
Aloha,
Art
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