[#129195] Is compatibility important for us? — Esteban Manchado Vel痙quez <zoso@...>

Hi all,

28 messages 2005/02/01
[#129199] Re: Is compatibility important for us? — James Britt <jamesUNDERBARb@...> 2005/02/01

Esteban Manchado Vel痙quez wrote:

[#129204] Re: Is compatibility important for us? — Francis Hwang <sera@...> 2005/02/01

[#129207] Re: Is compatibility important for us? — Eric Hodel <drbrain@...7.net> 2005/02/01

On 31 Jan 2005, at 18:21, Francis Hwang wrote:

[#129209] Re: Is compatibility important for us? — Francis Hwang <sera@...> 2005/02/01

[#129214] Re: Is compatibility important for us? — "Trans" <transfire@...> 2005/02/01

Francis,

[#129216] Re: Is compatibility important for us? — Francis Hwang <sera@...> 2005/02/01

[#129698] Re: Is compatibility important for us? — Esteban Manchado Vel痙quez <zoso@...> 2005/02/04

I had this on "postponed", and I just realized. Sorry.

[#129718] Re: Is compatibility important for us? — James Britt <jamesUNDERBARb@...> 2005/02/05

Esteban Manchado Vel痙quez wrote:

[#129808] Re: Is compatibility important for us? — Esteban Manchado Vel痙quez <zoso@...> 2005/02/05

On Sat, Feb 05, 2005 at 10:29:11AM +0900, James Britt wrote:

[#129218] Partial function application (was: Re: Binding precedence for first sym...) — E S <eero.saynatkari@...>

Trans wrote:

13 messages 2005/02/01
[#129220] Re: Partial function application (was: Re: Binding precedence for first sym...) — "Trans" <transfire@...> 2005/02/01

[#129289] Newbie: How to delete a Rails app (Windows) — peter.cutting@...

Hi

25 messages 2005/02/01
[#129362] Re: Newbie: How to delete a Rails app (Windows) — Douglas Livingstone <rampant@...> 2005/02/02

> but how do I delete? (If I just delete then I get a permissions

[#129373] Re: Newbie: How to delete a Rails app (Windows) — Caio Tiago Oliveira <caiot1@...> 2005/02/02

Douglas Livingstone, 2/2/2005 06:04:

[#129380] Re: Newbie: How to delete a Rails app (Windows) — peter.cutting@... 2005/02/02

yes the switching off may have helped (will try logging off next time

[#129385] Nuby needs an intro to testing for Win 2K — Barry Sperling <barry@...> 2005/02/02

[#129293] Re: [QUIZ] To Excel (#17) — "Graham Foster" <graham@...>

> Years ago, on a job developing custom reporting software, this was

15 messages 2005/02/01

[#129316] Wee 0.7.0 + Tutorial Videos — Michael Neumann <mneumann@...>

Hi,

27 messages 2005/02/01
[#129449] Re: Wee 0.7.0 + Tutorial Videos — itsme213@... 2005/02/03

Michael, I may be doing something wrong, but none of the MPEGs worked

[#129345] ANN: ParseTree 1.3.3 and ruby2c 1.0.0 beta 1 — Ryan Davis <ryand-ruby@...>

Actual announcements are on http://blog.zenspider.com/

24 messages 2005/02/02

[#129351] yarv and dbi — jm <jeffm@...>

Anyone out there tried dbi with yarv

18 messages 2005/02/02
[#129358] Re: yarv and dbi — SASADA Koichi <ko1@...> 2005/02/02

jm <jeffm@ghostgun.com> wrote :

[#129451] - E01: The Java Failure - May Ruby Helps? — Ilias Lazaridis <ilias@...>

"

90 messages 2005/02/03
[#130693] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Ilias Lazaridis <ilias@...> 2005/02/13

Ilias Lazaridis wrote:

[#130749] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Douglas Livingstone <rampant@...> 2005/02/14

> From the communities behaviour, I extract the following answer:

[#130784] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Ilias Lazaridis <ilias@...> 2005/02/14

Douglas Livingstone wrote:

[#130785] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Luke Graham <spoooq@...> 2005/02/14

From the link - "fictive technology collection". Ive worked on some of

[#130786] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Luke Graham <spoooq@...> 2005/02/14

Some of it is possible. I have created persistent Ruby objects, for

[#130823] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Austin Ziegler <halostatue@...> 2005/02/14

On Mon, 14 Feb 2005 17:49:18 +0900, Luke Graham <spoooq@gmail.com> wrote:

[#130856] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Ilias Lazaridis <ilias@...> 2005/02/14

Austin Ziegler wrote:

[#130871] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Austin Ziegler <halostatue@...> 2005/02/14

On Tue, 15 Feb 2005 04:09:54 +0900, Ilias Lazaridis

[#131021] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Ilias Lazaridis <ilias@...> 2005/02/15

Austin Ziegler wrote:

[#131025] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Thomas E Enebo <enebo@...> 2005/02/15

On Wed, 16 Feb 2005, Ilias Lazaridis defenestrated me:

[#131031] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Ilias Lazaridis <ilias@...> 2005/02/15

Thomas E Enebo wrote:

[#131036] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Thomas E Enebo <enebo@...> 2005/02/15

On Wed, 16 Feb 2005, Ilias Lazaridis defenestrated me:

[#131039] Re: [EVALUATION] - E01: The Java Failure - May Ruby Helps? — Ilias Lazaridis <ilias@...> 2005/02/15

Thomas E Enebo wrote:

[#129452] RedCloth 3.0.2 -- Please, oh please, let this be the one — why the lucky stiff <ruby-talk@...>

Okay, okay. The tumblers are clicking, the clouds are parting.

15 messages 2005/02/03

[#129554] lack of reaction to latest ruby implementations — Alexander Kellett <ruby-lists@...>

working on alternatives for the ruby runtime has

37 messages 2005/02/03

[#129686] iteration the ruby way — Navindra Umanee <navindra@...>

Hi,

18 messages 2005/02/04

[#129726] Ruby for closed source projects — Michael Gebhart <mail@...>

Hi,

16 messages 2005/02/05

[#129778] Korundum: error when overriding a KDE::RootPixmap method — Martin Traverso <martin@...>

Hi,

15 messages 2005/02/05

[#129831] Benchmark Mono - Ruby — Michael Gebhart <mail@...>

Hi,

21 messages 2005/02/06

[#129878] Ruby Interactive Shell — "Jenjhiz" <jenjhiz@...>

Hello,

18 messages 2005/02/06

[#129959] delayed string interpolation — Navindra Umanee <navindra@...>

Hi,

14 messages 2005/02/07

[#130044] web testing with Ruby — Jason Sweat <jason.sweat@...>

Does anyone have suggestions for projects/libraries to web test code

12 messages 2005/02/07

[#130068] Grid computing with Ruby? — Alexander Staubo <alex@...>

I have an interest in distributed computing and so-called grid

11 messages 2005/02/08

[#130090] Squeak like environment for Ruby — Logan Capaldo <logancapaldo@...>

Lately I've been playing around with Squeak (http://www.squeak.org/),

20 messages 2005/02/08
[#130091] Re: Squeak like environment for Ruby — Caio Tiago Oliveira <caiot1@...> 2005/02/08

Logan Capaldo, 8/2/2005 00:45:

[#130108] Re: Squeak like environment for Ruby — Alexander Kellett <ruby-lists@...> 2005/02/08

On Feb 8, 2005, at 4:59 AM, Caio Tiago Oliveira wrote:

[#130102] Syck 0.50 -- The new YAML is here for testing — why the lucky stiff <ruby-talk@...>

Finally, I can go back to drawing ponies out on the bridge by the old

13 messages 2005/02/08

[#130180] Ruby users in India? — Premshree Pillai <premshree.pillai@...>

Hi,

20 messages 2005/02/08

[#130280] How to mimic Perl's `s///' in Ruby? — Jos Backus <jos@...>

Given Perl's

18 messages 2005/02/09

[#130305] Phone number to words — Jordi Bunster <jordi@...>

Does anyone have one of those algorithms that convert a phone number to

13 messages 2005/02/10

[#130327] Building a Better Functor — "John W. Long" <ng@...>

Hi,

29 messages 2005/02/10

[#130399] A Ruby-relevant quote from Alan Kay — "Curt Hibbs" <curt@...>

ACM Queue just published an interview with Alan Kay (the creator of

27 messages 2005/02/10
[#130400] Re: A Ruby-relevant quote from Alan Kay — PA <petite.abeille@...> 2005/02/10

[#130408] Re: A Ruby-relevant quote from Alan Kay — Douglas Livingstone <rampant@...> 2005/02/10

> Steve Wart about "why Smalltalk never caught on":

[#130573] utilizing ++ and -- for comments — "Pe, Botp" <botp@...>

Since ++ and -- wont see the light of day in ruby, can we use it for comment

27 messages 2005/02/12
[#130587] Re: utilizing ++ and -- for comments — "George Moschovitis" <george.moschovitis@...> 2005/02/12

I also think that the =begin, =end notation is not comfortable to use.

[#130595] Re: utilizing ++ and -- for comments — Douglas Livingstone <rampant@...> 2005/02/12

> for example /* */

[#130707] Printing why's (poignant) guide to ruby — Richard Dale <Richard_Dale@...>

I'd like to try ruby on non-programmers teaching them using why's amazing

62 messages 2005/02/13
[#130714] Re: Printing why's (poignant) guide to ruby — Navindra Umanee <navindra@...> 2005/02/13

Richard Dale <Richard_Dale@tipitina.demon.co.uk> wrote:

[#130716] Re: Printing why's (poignant) guide to ruby — Alexander Kellett <ruby-lists@...> 2005/02/13

i'm really puzzled by this.

[#130731] Re: Printing why's (poignant) guide to ruby — Navindra Umanee <navindra@...> 2005/02/13

Alexander Kellett <ruby-lists@lypanov.net> wrote:

[#130843] Re: Printing why's (poignant) guide to ruby — Marcus Sharp <brothermarcus@...> 2005/02/14

*putting on flame retardant pants*

[#130715] Ruby on Windows: debugger questions and comments — umptious@... (JC)

'm evaluating scripting languages for a client. Ruby as a language

28 messages 2005/02/13

[#130742] (OT) Programmer's editors for the Mac — Timothy Hunter <cyclists@...>

Just got a new Powerbook, so I'm looking for suggestions for a good

43 messages 2005/02/14

[#130975] Is this old style Ruby? — centrepins@...

In Why's guide, I see the line:

30 messages 2005/02/15
[#130980] Re: Is this old style Ruby? — Jeremy Tregunna <jtregunna@...> 2005/02/15

[#130982] Re: Is this old style Ruby? — Nikolai Weibull <mailing-lists.ruby-talk@...> 2005/02/15

* Jeremy Tregunna (Feb 15, 2005 15:10):

[#130986] Re: Is this old style Ruby? — centrepins@... 2005/02/15

Page 349 of the (printed) pickaxe2 mentions '::' and '.', but doesn't

[#130988] Re: Is this old style Ruby? — "David A. Black" <dblack@...> 2005/02/15

Hi --

[#131103] Wee web-framework. It's great! — Joao Pedrosa <joaopedrosa@...>

Hi,

21 messages 2005/02/16
[#131111] Re: Wee web-framework. It's great! — "Vincent Foley" <vfoley@...> 2005/02/16

You know, I think Wee could become really hot if someone could mix it

[#131127] adding a dynamic method handler? (long post) — Mark Hubbart <discordantus@...>

Hi,

12 messages 2005/02/16

[#131132] Ruby + end user applications — "martinus" <martin.ankerl@...>

Ruby definitely needs more cool, simple to use, end user applications.

16 messages 2005/02/16

[#131168] FileSystem 0.1.0: Beta for me, Alpha for you — Francis Hwang <sera@...>

Greetings!

23 messages 2005/02/16

[#131252] Where is Ruby headed etc. — centrepins@... (Glenn)

A few musings/questions/dribble from an excited newbie. And my first

21 messages 2005/02/16
[#131256] Re: Where is Ruby headed etc. — Ben Giddings <bg-rubytalk@...> 2005/02/16

Glenn wrote:

[#131283] Re: Where is Ruby headed etc. — Brian McCallister <brianm@...> 2005/02/17

[#131286] Re: Where is Ruby headed etc. — Yukihiro Matsumoto <matz@...> 2005/02/17

Hi,

[#131275] installed ruby on linux without su access — Eko Budi Setiyo <contact_us@...>

Hi all,

17 messages 2005/02/17

[#131284] Ruby Visual Identity Team — "John W. Long" <ng@...>

Recently I've seen a couple of people mention how much they would like

43 messages 2005/02/17
[#131288] Re: Ruby Visual Identity Team — James Britt <jamesUNDERBARb@...> 2005/02/17

John W. Long wrote:

[#131307] Re: Ruby Visual Identity Team — gabriele renzi <rff_rff@...> 2005/02/17

James Britt ha scritto:

[#131404] - E02 - Nitro, a Ruby Based WebFramework — Ilias Lazaridis <ilias@...>

50 messages 2005/02/17
[#131445] Re: [EVALUATION] - E02 - Nitro, a Ruby Based WebFramework — Aredridel <aredridel@...> 2005/02/17

>

[#131490] Re: [EVALUATION] - E02 - Nitro, a Ruby Based WebFramework — Luke Graham <spoooq@...> 2005/02/18

Wow, I actually predicted this post in another thread. Nitro vs ruby is clearly

[#131494] Re: [EVALUATION] - E02 - Nitro, a Ruby Based WebFramework — Alexander Kellett <ruby-lists@...> 2005/02/18

not too sure to be honest.

[#131496] Re: [EVALUATION] - E02 - Nitro, a Ruby Based WebFramework — Alexander Kellett <ruby-lists@...> 2005/02/18

i take this back i read some of the various

[#131506] Re: [EVALUATION] - E02 - Nitro, a Ruby Based WebFramework — Bill Guindon <agorilla@...> 2005/02/18

On Fri, 18 Feb 2005 11:30:49 +0900, Alexander Kellett

[#131592] Re: [EVALUATION] - E02 - Nitro, a Ruby Based WebFramework — Christian Neukirchen <chneukirchen@...> 2005/02/18

Bill Guindon <agorilla@gmail.com> writes:

[#131605] Re: [EVALUATION] - E02 - Nitro, a Ruby Based WebFramework — Ilias Lazaridis <ilias@...> 2005/02/18

Christian Neukirchen wrote:

[#131422] ICFP Contest Dates Are Set — James Edward Gray II <james@...>

It's pretty early yet, but a lot of coders need time to plan and gather

13 messages 2005/02/17

[#131469] Virtual Ruby Group — Zach Dennis <zdennis@...>

Ok, I have a question for fellow rubyists, rubyiers, etc... There seem

55 messages 2005/02/17
[#131906] Re: Virtual Ruby Group — Zach Dennis <zdennis@...> 2005/02/21

It looks like there are a few folks interested in the Virtual Ruby Group

[#131921] Re: Virtual Ruby Group — "Curt Hibbs" <curt@...> 2005/02/21

One more suggestion: you could make a FreeRIDE plugin out of jabber4r, and

[#131942] Re: Virtual Ruby Group — Tanner Burson <tanner.burson@...> 2005/02/21

On Mon, 21 Feb 2005 21:02:19 +0900, Curt Hibbs <curt@hibbs.com> wrote:

[#131946] Re: Virtual Ruby Group — Bill Guindon <agorilla@...> 2005/02/21

On Tue, 22 Feb 2005 00:41:36 +0900, Tanner Burson

[#132114] Re: Virtual Ruby Group — Zach Dennis <zdennis@...> 2005/02/23

Bill Guindon wrote:

[#131499] pulling my hair out, why won't Kernel.sleep(0) sleep? — Sam Roberts <sroberts@...>

Can anybody give me any hints as to what I should be looking for? What

17 messages 2005/02/18

[#131545] Require when Executed file is required by another file. — "Zev Blut" <rubyzbibd@...>

Hello,

11 messages 2005/02/18

[#131563] 1-800-THE-QUIZ (#20) — Ruby Quiz <james@...>

The three rules of Ruby Quiz:

12 messages 2005/02/18

[#131635] Rails presentation — Jamis Buck <jamis_buck@...>

So I gave a presentation on Rails to the Utah Java Users Group last

14 messages 2005/02/18

[#131685] FXIrb 0.14 - a Win32 GUI wrapper around IRB — Martin DeMello <martindemello@...>

- What?

19 messages 2005/02/18

[#131753] Array#join non string arguments — Simon Strandgaard <neoneye@...>

A proposal:

15 messages 2005/02/19

[#131808] destructive! operations — Navindra Umanee <navindra@...>

Hi,

58 messages 2005/02/20
[#131847] Re: destructive! operations — "Robert Klemme" <bob.news@...> 2005/02/20

[#131852] Re: destructive! operations — Caio Tiago Oliveira <caiot1@...> 2005/02/20

Robert Klemme, 20/2/2005 12:04:

[#131859] Re: destructive! operations — James Edward Gray II <james@...> 2005/02/20

On Feb 20, 2005, at 10:23 AM, Caio Tiago Oliveira wrote:

[#131880] Re: destructive! operations — Navindra Umanee <navindra@...> 2005/02/20

James Edward Gray II <james@grayproductions.net> wrote:

[#131929] Re: destructive! operations — Austin Ziegler <halostatue@...> 2005/02/21

On Mon, 21 Feb 2005 06:07:58 +0900, Navindra Umanee

[#131939] Re: destructive! operations — "Bill Kelly" <billk@...> 2005/02/21

From: "Christian Neukirchen" <chneukirchen@gmail.com>

[#131943] Re: destructive! operations — Christian Neukirchen <chneukirchen@...> 2005/02/21

"Bill Kelly" <billk@cts.com> writes:

[#131958] Re: destructive! operations — Pit Capitain <pit@...> 2005/02/21

Christian Neukirchen schrieb:

[#131964] Re: destructive! operations — Christian Neukirchen <chneukirchen@...> 2005/02/21

Pit Capitain <pit@capitain.de> writes:

[#131969] Re: destructive! operations — Pit Capitain <pit@...> 2005/02/21

Christian Neukirchen schrieb:

[#131973] Re: destructive! operations — Christian Neukirchen <chneukirchen@...> 2005/02/21

Pit Capitain <pit@capitain.de> writes:

[#131985] Re: destructive! operations — "ES" <ruby-ml@...> 2005/02/21

On Mon, February 21, 2005 6:07 pm, Christian Neukirchen said:

[#131988] Re: destructive! operations — Pit Capitain <pit@...> 2005/02/21

ES schrieb:

[#131940] ANN: 2005 International Obfuscated Ruby Code Contest (IORCC) — Todd Nathan <iorcc@...>

Dear Fellow Rubists,

39 messages 2005/02/21
[#132095] Re: ANN: 2005 International Obfuscated Ruby Code Contest (IORCC) — "Josef 'Jupp' Schugt" <jupp@...> 2005/02/22

Todd Nathan wrote:

[#132102] Re: ANN: 2005 International Obfuscated Ruby Code Contest (IORCC) — Yukihiro Matsumoto <matz@...> 2005/02/22

Hi,

[#132105] Re: ANN: 2005 International Obfuscated Ruby Code Contest (IORCC) — "David A. Black" <dblack@...> 2005/02/22

Hi --

[#132107] Re: ANN: 2005 International Obfuscated Ruby Code Contest (IORCC) — Bill Guindon <agorilla@...> 2005/02/22

On Wed, 23 Feb 2005 08:23:08 +0900, David A. Black <dblack@wobblini.net> wrote:

[#132036] Proposal for nil, 0, and "" in an if statement — Dan Fitzpatrick <dan@...>

The following was derived from a portion of the destrutive! operations

38 messages 2005/02/22
[#132041] Re: Proposal for nil, 0, and "" in an if statement — David Heinemeier Hansson <david@...> 2005/02/22

> Here is a proposal for evaluating "", 0, and nil in an if statement:

[#132046] Re: Proposal for nil, 0, and "" in an if statement — Pit Capitain <pit@...> 2005/02/22

David Heinemeier Hansson schrieb:

[#132047] Re: Proposal for nil, 0, and "" in an if statement — Gavin Kistner <gavin@...> 2005/02/22

On Feb 22, 2005, at 6:41 AM, Pit Capitain wrote:

[#132053] Re: Proposal for nil, 0, and "" in an if statement — Gavin Kistner <gavin@...> 2005/02/22

On Feb 22, 2005, at 6:47 AM, Gavin Kistner wrote:

[#132054] Re: Proposal for nil, 0, and "" in an if statement — "David A. Black" <dblack@...> 2005/02/22

Hi --

[#132156] surprising: class A; end; A === A ==> false — Sam Roberts <sroberts@...>

I'm used to thinking of === being MORE useful

10 messages 2005/02/23

[#132186] Lighting the candles on the cake? — James Britt <jamesUNDERBARb@...>

Don't want to eat birthday cake too soon, but I know that someplace it's

12 messages 2005/02/24

[#132246] Simple HTML Renderer / Browser? — Randy Kramer <rhkramer@...>

I need a simple HTML renderer (to get started--eventually, I want to be able

18 messages 2005/02/24

[#132257] ruby-talk.com Expired? — James Edward Gray II <james@...>

I use http://ruby-talk.com/# style links on the Ruby Quiz site and I

13 messages 2005/02/24

[#132373] Ajax: A New Approach to Web Applications — "Curt Hibbs" <curt@...>

I always have trouble remembering whether its HttpXmlRequest, or

37 messages 2005/02/25
[#132379] Re: [OT] Ajax: A New Approach to Web Applications — "James G. Britt " <ruby.talk.list@...> 2005/02/25

On Sat, 26 Feb 2005 06:45:34 +0900, Curt Hibbs <curt@hibbs.com> wrote:

[#132382] Re: [OT] Ajax: A New Approach to Web Applications — "Curt Hibbs" <curt@...> 2005/02/25

James G. Britt wrote:

[#132375] Re: [OT] Ajax: A New Approach to Web Applications — PA <petite.abeille@...> 2005/02/25

[#132455] RubyGems 0.8.5 — Jim Weirich <jim@...>

= Announce: RubyGems Release 0.8.5

23 messages 2005/02/27
[#132525] RubyGems 0.8.6 (was Re: [ANN] RubyGems 0.8.5) — Chad Fowler <chadfowler@...> 2005/02/27

On Sun, 27 Feb 2005 10:34:34 +0900, Jim Weirich <jim@weirichhouse.org> wrote:

[#132500] Parsers vs. Homemade "Parsing" via REs — Randy Kramer <rhkramer@...>

I have the need to translate several megabytes of TWiki marked up text to

10 messages 2005/02/27

Re: UML and ER modeling (was: Re: Microsoft and DSLs)

From: "Robert Klemme" <bob.news@...>
Date: 2005-02-18 14:59:51 UTC
List: ruby-talk #131571
"Austin Ziegler" <halostatue@gmail.com> schrieb im Newsbeitrag
news:9e7db91105021806141135f8c5@mail.gmail.com...
> On Fri, 18 Feb 2005 22:09:47 +0900, Robert Klemme <bob.news@gmx.net>
> wrote:
> > "Austin Ziegler" <halostatue@gmail.com > schrieb im Newsbeitrag
> > news:9e7db91105021804385d91a8ac@mail.gmail.com...
> >> On Fri, 18 Feb 2005 18:34:51 +0900, Phil Tomson
> >> <ptkwt@aracnet.com> wrote:
> >> [...]
> >>> "[...]This is a far different approach than UML's general,
> >>> wide-purpose models. For example, UML class diagrams can be used
> >>> for conceptual modeling, object-oriented analysis modeling,
> >>> object-oriented design modeling, logical data modeling and
> >>> physical data modeling.[...]"
> >> FWIW, the author of that statement is wrong. UML cannot be
> >> effectively used for either logical or physical data modeling.
> >> It's too based in object modeling. People who use UML for ER/data
> >> modeling are making a huge mistake. There's far better modeling
> >> methodologies out there than UML.
> > Just curios: what do you think are the major shortcomings of URL
> > that make it inappropriate for ER modeling?
>
> I laid out much of this in a response to Markus in the first Ilias
> thread, but I'll repeat it here.

Thank you for investing that effort.  I'm neither an UML expert nor an UML
devotee.  Still, I think not all your arguments against UML are valid.

> Everything. UML has a bunch of problems, ranging mostly from the
> fact that it tries to be capable of modeling everything all the
> time.

True, that's one big source of problems.  See my personal UML drawback
list at the end.

> That means that to attempt to do ER/data modeling, you have to
> repurpose the class diagram. Except that tables don't have methods,
> so you have to ignore that entirely. And that UML uses C/C++/Java
> types explicitly, which aren't as rich as or don't map well to SQL
> databases by and large.

You probably used an UML tool that makes use of Java, C++ etc. types - but
that's not a feature of UML itself.  It's just something that makes code
generation possible / easier for a concrete programming language and I
think that's the reason why vendors do this.

> Object oriented mechanisms are generally good at what I call "one-
> way browsing." That is to say that there's generally only one way to
> access certain pieces of information in a given object model. A
> perfect example would be the case of a cellular phone company's
> billing policies. Typically, a customer (C) will have one or more
> rate plans (P) that can also be assigned to other customers; a
> standard many-to-many relationship.

I'd say you're right with regards to OOPL: most of them do in fact lack
proper mechanisms for modeling relationships.  I don't subscribe to this
statement with regard to OO modeling: UML does quite a good job at
modeling all differnt kinds of relationships - even n-ary relationships.

<snip/>

> UML is based on Jacobsen, Booch and Rumbaugh; they are all object
> oriented theorists. And they're wrong when it comes to the supremacy
> of OO design over proper ER design.

Do they actually claim that?

> But UML encodes that bias and
> forces you to make choices that you should not have to make in your
> ER modeling if you're making the mistake of using UML for that
> instead of the established models for ER. (Indeed, for some types of
> database design -- typically data warehousing, ER isn't appropriate
> either -- you need what is called Dimensional Modeling, and I know
> very little about that.)
>
> Note that I'd *never* suggest that ERD should be used for object
> modeling. UML Class Diagrams are perfectly good for that. But that's
> about *all* they're good for, and they're not always good for that
> in all languages because they make assumptions about the language
> that will be used.

UML itself is quite general in fact, I assume you are rather talking about
specific tools.

> Products like ArcStyle might be able to help with
> that, but they'll still never produce a good database schema from an
> object model. Never.

Hm, I have the impression that you've worked with awful UML tools (or UML
tools that were not suited to the task you wanted them to fulfill) and now
you blame UML.  IMHO we should keep that separate.

Here's my UML drawback list (TM)

 - Too many versions

 - UML is used for modeling *and* graphical programming.  IMHO it's better
suited to modeling than to programming; the difficulties getting a proper
UML tool with working reverse engineering are a good indication for this
point.

 - People often do not distinguish between these two use cases of UML and
that creates some confusion.

I still find UML (or rather a subset of it) quite useful to sketch or
design certain aspects of a system.  I never use it for direct code
manipulation as I've experienced too many problems with this.  Also I
think it's not productive to model a complete system down do every detail
with UML - which is what you would have to do if you wanted to get code
out of this.

Kind regards

    robert


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