Re: Poll: What percentage advantage are RDBMS vendors taking of the RM?

"Alan" <not.me_at_uhuh.rcn.com> wrote in message news:7Iepe.11105$ld3.6729_at_trnddc04...
> What you have asked is akin to, "How big is your database?" It is not a
> valid question in that it does not indicate what parameters you expect to
> be
> used. For example, do you mean a percent of "expected" features? Are they
> weighted by importance? Important to whom? For what purpose (E.g., OLTP,
> OLAP?)
What I am trying to ask is "How *relational* are DB2, Oracle and SQL Server according to the principles of the relational model?

People assert that these SQL-DBMS are "the best we have at the moment" and that they are not ("Fully") relational. I want to understand just HOW MUCH they are not fully relational, as a ball-park rough-as-guts estimate.

Is it 10% or is it 90%. ?

> Why would anyone here be able to give a more valid answer than the
> thousands of practitioners alsewhere on the net? Isn't it best answered
> through careful unbiased research of the subject?

IMO this question is best answered by those who have a good understanding of the relational model ONLY ! Hence the Q here.

>As asked, it borders on
> being a silly question.

Well, hopefully I have restated the question in less border-line terms. Thanks for the prompt. Does this make more sense?

> "mountain man" <hobbit_at_southern_seaweed.com.op> wrote in message
> news:padpe.6334$F7.1241_at_news-server.bigpond.net.au...
>> "paul c" <toledobythesea_at_oohay.ac> wrote in message
>> news:kvZoe.1586829$8l.1480031_at_pd7tw1no...
>> > mountain man wrote:
>>
>> >> The rating of 100 equates to full realisation of the RM.
>> >> The rating of 50 equates to half realisation of the RM.
>> >> The rating of 10 equates to 10% realisation of the RM.
>> >> The rating of 0 equates to zero realisation of the RM
>> >>
>> >> My estimate/opinion is around 80% give or take 10%.
>> >>
>> >> What is your estimate and/or opinion?
>> >>
>> >
>> > there seem to be two questions here. my answer to the first one is
>> > that
> i
>> > am zero percent prepared to answer the second one, let alone willing.
>>
>> There is one question. In what percentage is the RM
>> "realised" in the major SQL-RDBMS products?
>>
>> I am interested to try and evaluate how people think
>> about the "realisation" of the RM in today's industry.
>>
>> There are a widely ranging series of perspectives,
>> and I am attempting to gauge this series.
>>
>> Do you have a problem with this question?
>>
>>
>>
>>
>>
>>
>>
>> --
>> Pete Brown
>> IT Managers & Engineers
>> Falls Creek
>> Australia
>> www.mountainman.com.au
>>
>>
>
>
Received on Tue Jun 07 2005 - 15:48:54 CEST