Re: object oriented vs object relational

From: James <jraustin1_at_hotmail.com>
Date: 11 Jun 2002 07:39:26 -0700
Message-ID: <a6e74506.0206110639.248c7f58@posting.google.com>

> > Both XDb and rdbs are fundamentally based on the same concept of
> > relation (a related set of information, according to one book).
>
> XDb is based on domains -- not relations.

What is the definition of relation?
What is the definition of domain?
Which one is better and for what?
Which one is the fundamental basis for a database?

---

OO terminology describes the same in an orthogonal manner:

The object is the fundamental atomic unit. An object can represents anything: a number, a word, a sound, a picture, a movie, a smell, a feeling, an idea, etc. An object can have instances.

A class is an object that has or can have instances. An instance is an object that has a class.

This is the basis of XDb (www.xdb1.com) Received on Tue Jun 11 2002 - 09:39:26 CDT