Tyrone - What does the 001 language look like? Is it similar to ORM? How can ORM be integrated or play a part in an 001 modelling effort? Is there any free...
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Scot A. Becker
scotb@...
Apr 8, 1999 4:34 pm
The April Issue of the Journal of Conceptual Modeling (JCM) is now online at http://www.inconcept.com/JCM/. The JCM is a completely free resource dedicated to...
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Scot A. Becker
scotb@...
Apr 10, 1999 6:29 pm
Hi All, In previous articles, I have discussed the technical merits of using the ORM approach. I am thinking about another article, taking another approach. In...
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roy.wilsker@...
Apr 11, 1999 3:36 pm
I've been looking at ORM for a while now and at least one reason why ORM isn't more popular is perfectly clear: No one has created a set of tools (leveled...
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John Hanna
jh@...
Apr 11, 1999 3:47 pm
In the April JCM article section comparing UML and ORM modeling of aggregation, Dr. Halpin indicates that "ORM, as well as many versions of ER, includes no...
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Patrick Hallock
path@...
Apr 11, 1999 8:52 pm
Roy, Being one of the people who teachs ORM, (as do all people here at ICM) I understand you issue. I will put together such an article with help of my...
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John Hanna
jh@...
Apr 12, 1999 4:29 pm
... the ORM ... In ... They ... supports it ... "tried ... to be ... the ... The reasons listed seem to have a bias that "ORM is perfect, and people just don't...
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Allred, Mark J
Mark.Allred@...
Apr 12, 1999 5:03 pm
Scott, First, thank you for JCM. I read it regularly, and recommend it to my associates. I know that some of them also read it. In response to your query: I...
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Scot A. Becker
scotb@...
Apr 12, 1999 5:20 pm
Hi John, Thanks for the response! ... It is, isn't it? <s> ... OK, fair enough. Any ideas as to what these might be? ... Hmmm.... aside from controlled...
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Cuyler, David S
dscuyle@...
Apr 12, 1999 5:24 pm
I think John has a good point here. In fact, the "ORM religion" perspective is a large part of the reason why ORM-based analysis is often rejected at our...
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Scot A. Becker
scotb@...
Apr 12, 1999 5:39 pm
Hi Dave, Thanks for the response! ... Absolutely. In fact, after the initial modeling is done, I primarily use ER/physical diagrams because I forget column...
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Terry Halpin
TerryH@...
Apr 12, 1999 8:08 pm
I agree with most of what John and David have to say here. Personally, I find ORM far superior for conceptual data modeling, where the modeler communicates...
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Allred, Mark J
Mark.Allred@...
Apr 13, 1999 2:01 am
My instinctive response to John's interrogation is that the role labels are part of the notation. However, on further consideration, I am aware of some eighty...
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John Hanna
jh@...
Apr 13, 1999 2:34 pm
On Monday, April 12, 1999 at 22:0 Mark Allred said ... This raises an interesting point. When I asked - "Shouldn't the ORM role terms (e.g. for aggregation) be...
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Terry Halpin
TerryH@...
Apr 13, 1999 6:41 pm
If I read John's comments correctly, he's suggesting that an organization might promote an internal terminology standard for treating certain predicate names...
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Allred, Mark J
Mark.Allred@...
Apr 13, 1999 6:41 pm
Roy is right. I have spent a lot of time trying to get people to understand how to read and identify with the notation. When they look at it, it seems too...
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Allred, Mark J
Mark.Allred@...
Apr 14, 1999 1:16 am
Hi, all~ Here's a little challenge for your thinking caps. I want to reopen the discussion of the Zachman framework as representing either a refinement or a...
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dennis_corbo@...
Apr 14, 1999 11:49 pm
John - Appropriate naming is important, but, I also think that constraints may play a role for certain types of aggregation. In fact, you can use ORM...
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Cuyler, David S
dscuyle@...
Apr 16, 1999 3:10 am
It seems to me that with ORM we at least get significant indicators of aggregation without special constraints or standardized predicate phrasing. In a typical...
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Scot A. Becker
scotb@...
Apr 16, 1999 3:15 pm
Is anyone interested in holding scheduled internet chat sessions? It would be an interesting way to discuss JCM related topics, answer questions, discuss...
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dennis_corbo@...
Apr 16, 1999 5:55 pm
If it is important to know, at a conceptual level of understanding, that a set of roles played by an object represent an aggregation, you could probably do one...
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Terry Halpin
TerryH@...
Apr 16, 1999 5:55 pm
Dave's intuitions are at least partly correct. As I discussed in Part 8 of my UML/ORM series for the JCM, there are some connections between ORM constraints...
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Allred, Mark J
Mark.Allred@...
Apr 16, 1999 5:55 pm
There are several definitions of aggregation which make Dave's observations valid in regard to collecting attributes about some concept. My Webster's...
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Cuyler, David S
dscuyle@...
Apr 19, 1999 6:03 pm
No problem with all this response. I am familiar with the work of Odell and Bock, and others, concerning the many types of aggregation. I was limiting my...
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Scot A. Becker
scotb@...
Apr 20, 1999 4:06 pm
Hi All, I am sending this to all of the distribution lists as the glitch I am about to mention applies to more than one list. I apologize if you get multiple ...
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Allred, Mark J
Mark.Allred@...
May 10, 1999 5:23 pm
Happy Monday to you all! I'm more than a bit surprised that the challenge I submitted regarding Zachman abstraction vs. refinement garnered absolutely no...
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Scot A. Becker
scotb@...
May 11, 1999 10:27 pm
Hi All, I'm always looking for ways to improve the JCM, so I thought I'd post and see if any of you can offer me some insight. Feel free to respond to the list...
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dennis_corbo@...
May 14, 1999 2:27 pm
Scot - I would like to see more articles that are less academic and show ORM being used in practice. I would also be interested in articles that show that ORM...
82
scotb@...
May 14, 1999 5:54 pm
... Dennis, Thanks for the feedback. ORM-in-the-real-world articles have been on my list as well. I’m thinking about a couple of possible articles myself....
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dkretz@...
May 18, 1999 11:23 pm
After several months' experience with Info/Visomodeler, I have questions. Here are several: 1. Is there a modeling concept for a default value for an...
