---------- Original Message -----------
From: "hvlad" <hvlad@...>

> > One of my data models use natural keys that can change overtime. How are

foreign keys and cascades implemented in the latest version of Firebird? Is it
like in a REAL rdbms where the foreign key is actually a internal pointer to the
referenced table and cascades are "instant" no matter how big the database

>
> Could you point us to the documentation to the such "REAL rdbms"
> where your statement is confirmed ?
>
> Regards,
> Vlad

------- End of Original Message -------

Here you go:

http://en.wikipedia.org/wiki/Codd's_12_rules

Oh, but wait. Rules 1, 2, and 8 imply relational databases must use values, not
pointers? Oops!

</sarcasm>

-Philip