Re: Object IDs vs relational keys?

Thanks Chris, that makes things clearer!

Amir

On Wed, 17 Mar 2010 11:23:13 -0500 Chris Muller asqueaker@gmail.com wrote:

Hi Amir, with Magma, every object responds to #magmaOid (It's an ugly name, but I prefer to be considerate of namespace, in case someone else wants to use #oid). It is an integral identifier unique to that repository.

However, in an object system, you usually don't need to do "logical" joins between objects via id, instead, just reference them directly. That is what is meant when your book mentions that ODBMS's "hard-code" the relationships. They're not actually coded, they just "pre-exist" in teh db, rather than needing to be "looked up" over and over again..

Hope this help, Chris