Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> comp.databases.theory -> Re: Operationalize orthogonality

Re: Operationalize orthogonality

From: x <x_at_not-exists.org>
Date: Mon, 5 Jun 2006 15:43:10 +0300
Message-ID: <e618mn$5d7$1@nntp.aioe.org>

"Bob Badour" <bbadour_at_pei.sympatico.ca> wrote in message news:dzVgg.17757$A26.412642_at_ursa-nb00s0.nbnet.nb.ca...
> Tony D wrote:
>
> > x wrote:
> >
> >>"Tony D" <tonyisyourpal_at_netscape.net> wrote in message
> >>news:1149504303.205324.83320_at_j55g2000cwa.googlegroups.com...
> >>
> >>>x wrote:
> >>>
> >>>
> >>>>How complicated! It would not be easyer to follow Mr. Codd advice ?
> >>>>Domains, not types.
> >>
> >>>And the difference between a domain and a type is what ? Precisely ?
> >>
> >>The "standard" answer would be "educate yourself". :-)
> >
> > Alternatively, you could attempt a non-standard answer ?

> The answer depends on whether one accepts specialization by constraint
> as specifying a new *type*.

When one specify a type, it is a type no matter how it is specified. :-)

> If one does, then domain and type are
> synonymous. If one does not, then a domain is generally a specified
> subset of some type used in a specified context.

I would accept generalization by constraint. :-)

> >>What is your opinion ?

> > In this context, I equate the terms domain and type - as mentioned in
> > the presentation pointed to elsewhere on this thread. (I don't,
> > however, equate classes with domains or types - principally because (a)
> > I'm not 100% clear on what a class is exactly, and (b) from what I do
> > understand about classes & objects, there is a dynamic element to them
> > that I wouldn't expect to find in a domain or type. I am open to
> > persuasion on these points.)

> a) Neither are the OO proponents.
> b) That comes from the frequent use of 'object' as synonymous with
> 'variable'. However, 'object' gets used for a lot of different things too.

And OO stands from Other Orthogonal, isn't it ? :-)

Sorry for the :-) even if you will not see them. Received on Mon Jun 05 2006 - 07:43:10 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US