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database market share 2003

http://biz.yahoo.com/rc/040526/tech_...etshare_1.html

Interesting to see that database sales for windows is more than
Unix.
Nov 12 '05
346 16669
> followed by DB2

Uh huh - and in 1985, exactly which version of DB2 was that ?

Nov 12 '05 #301
"Mark Townsend" <ma***********@ comcast.net> wrote in message
news:40******** ******@comcast. net...
followed by DB2


Uh huh - and in 1985, exactly which version of DB2 was that ?

Probably DB2 Version 1.2 (which ran on MVS). All the relational database
products have moved away from the pure relational model according to Codd's
12 rules since that time. Some more than others.
Nov 12 '05 #302
With Oracle (a little more than some other RDBMS's) programmers and users
who access the data want to know (or need to know depending on your point of
view) a little bit about the way the data is physically organized. This
includes things like rowids, certain kinds of indexes, etc. In a pure
relational model, the physical structure of the data is isolated from the
logical structure.
I'm still confused - you mean product specific features/techniques that
improve performance but are not a pure relational model and/or part of
the ANSI SQL Standard ? Perhaps some of the things mentioned in articles
like
http://www-106.ibm.com/developerwork...04pooloth.html
Or this
http://www-106.ibm.com/developerwork...html#appendixb
Or this
http://www7.software.ibm.com/vadd-bi...0312stolze.pdf
Or this
http://www-106.ibm.com/developerwork...yip/index.html
Or the "Resolving Lock Problems" section of this
http://www-106.ibm.com/developerwork...10wilkins.html
Or this
http://www-106.ibm.com/developerwork...06arocena.html
Or this
http://db2mag.com/db_area/archives/2003/q2/welgan.shtml
Or this
http://www.db2mag.com/db_area/archiv.../q2/deng.shtml
Or this
http://www.redbooks.ibm.com/redbooks...17_bmark.html#
or this
http://www-106.ibm.com/developerwork...kuznetsov.html
Or this
http://www-106.ibm.com/developerwork...kuznetsov.html
Or this
http://www-106.ibm.com/developerwork...01mullins.html
Or this
http://www-106.ibm.com/developerwork...kuznetsov.html
Or this
http://www-106.ibm.com/developerwork...0208zubiri.pdf
Or this
http://www-106.ibm.com/developerwork...3milligan.html


This movement away from a pure relational model is done for
performance reasons or to add features that some programmers may want.
Nevertheless these features (no matter how much people want them)
often are in violation of both Codd's rules and ANSI SQL standards.


Thanks for the heads up. By all means Stay Pure (TM).

Nov 12 '05 #303
"Mark Townsend" <ma***********@ comcast.net> wrote in message
news:5raAc.4868 7$eu.47179@attb i_s02...

Thanks for the heads up. By all means Stay Pure (TM).

I didn't say "stay pure." I just repeated what Ted Codd said. Those are the
facts. I didn't start the conversation about the 12 rules of Ted Codd,
someone else did.

But I do think that Oracle has moved further form the relational model than
DB2, although I suspect that the IBM marketing people are pressuring the lab
to add the same or similar enhancements. People seem to like to compare
features of the products they buy (at least some of them) even when they are
of no real benefit or even if they are somewhat detrimental.

Another problem of moving from the relational model is that SQL standards
get compromised which makes it hard for customers to move seamlessly between
platforms. But that is part of the marketing strategy, especially of the
companies that have the biggest installed base.
Nov 12 '05 #304
Noons wrote:
Enor P <en****@hotmail .com> wrote in message
news:<2j******* *****@uni-berlin.de>...
Why you post on informix newsgroup? We don't care, do want hear this.


Why don't you complain about EVERYONE else who
continues to x-post there, arsehole?
I'll post wherever I want, whenever I want and
about whatever I want and you can go and shove
your offended replies where the sun doesn't shine.
Got it?


Is you and Daneil Morgan who cross post. I complain abpout both, and both
say I am wrong. You are net kook? Real name Colin James III?

I very sorry I dare to complain, I am surely wrong. News gruop not place
where people need manner. You are master of internet.

--
Enor
Nov 12 '05 #305
Daniel Morgan wrote:
Noons wrote:
Enor P <en****@hotmail .com> wrote in message
news:<2j******* *****@uni-berlin.de>...

Why you post on informix newsgroup? We don't care, do want hear this.

Why don't you complain about EVERYONE else who
continues to x-post there, arsehole?
I'll post wherever I want, whenever I want and
about whatever I want and you can go and shove
your offended replies where the sun doesn't shine.
Got it?


Have you ever noticed how replies, like the one above by Enor, are never
written in Oracle, SQL Server, or Sybase forums? I don't even remember
them in the Informix group before purchased. This is a curiosity of the
blue suiters. They've replaced 'hear no evil' with 'hear nothing
that isn't the party line'.


We have hear what you say. You have say it lots and lots. You keep say, till
we get anger. Is like small child want toy. Not stop till me say yes. We
not want hear same thing over again. We have listen, we have say what we
say, YOU are pesron not want to think somone else have somthing true to
say.

What is blue suiter please?

--
Enor
Nov 12 '05 #306
Noons wrote:
Enor P <en****@hotmail .com> wrote in message
news:<2j******* *****@uni-berlin.de>...

You have looked in mirror? All shit is coming from you and Daneil Morgan.


I don't look at mirrors to post on Usenet, unlike morons
like you.


I cannot believe you so stupid, so I can only guess you can't think of
clevre anser.

--
Enor
Nov 12 '05 #307
Daniel Morgan wrote:
Noons wrote:
Enor P <en****@hotmail .com> wrote in message
news:<2j******* *****@uni-berlin.de>...
You have looked in mirror? All shit is coming from you and Daneil Morgan.

I don't look at mirrors to post on Usenet, unlike morons
like you.


Nor do I.


May be if you look in morror instead of post here, we are all happy?

--
Enor
Nov 12 '05 #308
"Mark Townsend" <ma***********@ comcast.net> wrote in message
news:5raAc.4868 7$eu.47179@attb i_s02...
With Oracle (a little more than some other RDBMS's) programmers and users who access the data want to know (or need to know depending on your point of view) a little bit about the way the data is physically organized. This
includes things like rowids, certain kinds of indexes, etc. In a pure
relational model, the physical structure of the data is isolated from the logical structure.
I'm still confused - you mean product specific features/techniques that
improve performance but are not a pure relational model and/or part of
the ANSI SQL Standard ? Perhaps some of the things mentioned in articles
like

http://www-106.ibm.com/developerwork...04pooloth.html Or this
http://www-106.ibm.com/developerwork...html#appendixb Or this
http://www7.software.ibm.com/vadd-bi...0312stolze.pdf Or this
http://www-106.ibm.com/developerwork...yip/index.html Or the "Resolving Lock Problems" section of this
http://www-106.ibm.com/developerwork...10wilkins.html Or this
http://www-106.ibm.com/developerwork...06arocena.html Or this
http://db2mag.com/db_area/archives/2003/q2/welgan.shtml
Or this
http://www.db2mag.com/db_area/archiv.../q2/deng.shtml
Or this
http://www.redbooks.ibm.com/redbooks...17_bmark.html#
or this
http://www-106.ibm.com/developerwork...kuznetsov.html Or this
http://www-106.ibm.com/developerwork...kuznetsov.html Or this
http://www-106.ibm.com/developerwork...01mullins.html Or this
http://www-106.ibm.com/developerwork...kuznetsov.html Or this
http://www-106.ibm.com/developerwork...0208zubiri.pdf Or this
http://www-106.ibm.com/developerwork...3milligan.html

No, that is not what I mean, nor what Ted Cod meant. Simply improving
performance does not make the database less relational to Codd

If the end user or programmer is required to, or benefits from, knowing the
physical structure of the data, or can use SQL extensions to improve
performance, then these extensions to the SQL model move away from the pure
relational model. Oracle has more of these features than DB2, which they
publicize heavily when arguing that Oracle is superior to DB2.

When performance is increased behind the scenes by the DBA, that does not
necessarily violate Codd's 12 rules for the relational model.

In pure relational theory, knowledge of the physical structure of the data
is isolated from the DML created by the end user to access the data. No
relational databases evaluated by Codd passed all of his 12 rules, and maybe
those that are still around pass even fewer of the 12 rules today than they
did when he first evaluated them.

Very few people today really care whether a database is relational. The main
criteria the "market share", so that the IT person will have more job
opportunities open to them. All of the big 3 database will get the job done
with about the same performance. Obviously SQL Server is limited to Windows
only, which is another factor. Price is also a factor for the executives who
pay the bills.

No one believes that MS or IBM will stop supporting their database products
during our lifetime. So all this talk about market share is really just
looking out for the personal interests of the IT people, disguised as
something else.

If one were considering a database other than the big 3, then maybe it might
a concern about how long the database product can survive in the market
place, and how long it will be supported by in the future (by a company
other than CA who will extract blood for a support contract).
Nov 12 '05 #309
"Andrew Hamm" <ah***@mail.com > wrote in message news:<2j******* *****@uni-berlin.de>...
Noon, Serge has already backed off.

No, they have continued. Clearly, you have NO CLUE
how to check a thread.

When Daniel and even Mark finally show
some maturity and drop this petty school-boy dick-flogging subject,
so that two-dicks like you can continue to flog on
crap under the disguise of "knowledge" ? Dream on...
you'll
be the last one left still, err, holding on and you'll be exposed for the
wanker that you clearly are.


Says the incompetent wanker who doesn't have a clue
what he's talking about... To the point where his
only strategy is ad-homine attacks.
Piss off, troll.
Nov 12 '05 #310

This thread has been closed and replies have been disabled. Please start a new discussion.

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