Quoth [EMAIL PROTECTED] ("Uwe C. Schroeder"):
> I concur. However the problem SAP had some 18years ago when they
> invented their system were massive differences between
> databases. The scope they had in mind didn't allow for whole
> database layers to be redundant just for the sake of being able to
> talk to several database engines - ergo they wrote one layer and
> omitted using vendor dependant database features. Nowadays most
> relevant databases are pretty compatible when it comes to
> constraints, so if you stick to the basics you should be fine now.

One of the issues was always that of locking.  Different systems still
have different semantics.
-- 
output = reverse("gro.gultn" "@" "enworbbc")
http://www.ntlug.org/~cbbrowne/nonrdbms.html
I've implemented a parser combinator library in Generic C#, and indeed
what is  pretty clear   in   a functional language   looks   extremely
scientific in an object-oriented one.  -- Peter Sestoft

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