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Re: APIs, messaging
- From: Uche Ogbuji <email@example.com>
- To: Thomas Passin <firstname.lastname@example.org>
- Date: Wed, 23 May 2001 09:44:47 -0600 (MDT)
> A relational data model can be seen as objects without methods plus
> relational integrity rules. You could argue that the rules are really there
> with objects, too, but they are usually added on later with procedural code
> (as business rules still have to be treated in relational models).
Worth noting that ODMG adds intrinsic binary relational integrity of
associations. This is a nice step forward from "core" OO, but OODBMS
could take an even greater leap forward in expressivity with the addition
of N-ary relationships with integrity constraints.
Further note: I've pointed out before, ODMG's ability to have collections
as the end-points of binary relationships are not really the equivalent
of N-ary relationships.
Of course, with XLink, XML has its N-ary relationships. Bravissimo.
Uche Ogbuji Principal Consultant
email@example.com +1 303 583 9900 x 101
Fourthought, Inc. http://Fourthought.com
4735 East Walnut St, Ste. C, Boulder, CO 80301-2537, USA
Software-engineering, knowledge-management, XML, CORBA, Linux, Python