Re: Object-Role Modeling?

From: Marshall Spight <marshall.spight_at_gmail.com>
Date: 9 Jul 2005 11:28:18 -0700
Message-ID: <1120933698.741711.277700@g44g2000cwa.googlegroups.com>

Alfredo Novoa wrote:
>
> > From what I have read of it, it seems that it would be the
> >place to start,
>
> I prefer to start defining relvars.

Yeah, I have to agree with Alfredo here. If you want to design a database schema, why not do it by designing a database schema?

If we want to raise the level of abstraction, it is necessary to omit certain details in order to focus on other details. But all of the details of a table definition are important; you can't just skip over any of them.

The might *possibly* be some opportunity (as I think Jan was suggesting in another thread) to abstract the relationships between tables, but I am sceptical. The techniques for defining and constraining table relationships in SQL are fairly simple and easy to recognize, so at best there isn'm much advantage to be had.

Marshall Received on Sat Jul 09 2005 - 13:28:18 CDT