No, you are not missing anything. My point there was how to build the "constraints" part. Some DB's can be seen as providing a more straightforward implementation, but that depends only from which angle you approach the solution. In this case, my solution lays more in validation (e.g., see http://guide.couchdb.org/draft/validation.html, especially at the image http://guide.couchdb.org/draft/validation/01.png) than in views. And this is the constraint part which I was referring to.

Don't get me wrong, I meant no offense when I said it's more about logic than the tool itself. By logic here I meant just the way you implement the constraint and not the developer logic. I apologize if that created any confusion with that.




On 10/20/2011 03:12 PM, Alexander Uvarov wrote:
This is not a problem in RDBMS with transactions and constraints. Am I
missing something?

On Thu, Oct 20, 2011 at 6:48 PM, CGS<[email protected]>  wrote:
Hi Patrick,

I suppose that is more of logic than the tool itself and I suppose you may
enter the same problem in any DB you may change to (SQL or no-SQL).

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