Is Inheritance in RM possible?

From: JOG <jog_at_cs.nott.ac.uk>
Date: 14 Dec 2005 07:58:58 -0800
Message-ID: <1134575938.366961.78280@f14g2000cwb.googlegroups.com>

Does inheritance currently exist in RMDBMS anyhwere? I'm not referring here to OO or O-R databases, but rather the addition of the functionality in an RM system. Is it even possible or at odds to the underlying principles of the model?

I have heard mention of the INHERITS keyword in Oracle and PostreSQL but having only very limited experience with the respective products, I have no idea of the extent or relevance of its functionality.

I've also encountered Darwen's proposal for an inheritance model via a google seach, and a trawl to thethirdmanifesto.com, but outside that I am need of illumination. Any experiences of those in this group are much appreciated.

All best, Jim. Received on Wed Dec 14 2005 - 09:58:58 CST