An interesting question popped up on another data modeling list. Someone was looking for info on implementing ORM without the graphics. I've heard that there...
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Cuyler, David S
dscuyle@...
Jul 1, 1999 11:29 pm
Actually John Sharp has been doing this for some time. The FCO-NIAM folks do this as well (Harm van der Lek, et al). ... eGroups.com home:...
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Scot A. Becker
scotb@...
Jul 1, 1999 11:37 pm
... Yup. I think the question I got was directed specifically at FORML (elementary facts). I was getting at more of what lingo patterns are used to capture the...
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dennis_corbo@...
Jul 7, 1999 6:00 pm
They may want to take a look at one of the PROLOG sites for information about programming in logic. It not only allows facts to be specified in text but the...
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Scot A. Becker
scotb@...
Jul 8, 1999 1:01 am
InConcept Object-Role Modeling Seminar Introduction InConcept, Inc. is proud to announce an upcoming ORM seminar in Minneapolis, MN. Dates Wednesday, September...
106
Allred, Mark J
Mark.Allred@...
Jul 16, 1999 1:00 pm
Stan Kimball recently wrote in Intelligent Enterprise, "STIRRING THINGS UP" (http://www.iemagazine.com/992206/warehouse.shtml): "Entity-relation (E-R) models...
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Johnston, Mark
mark.johnston@...
Jul 17, 1999 12:53 am
Mark, An example (admittedly rather silly) which I think of from time to time may serve to clarify what both you and the author are wrestling with. Imagine, if...
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Scot A. Becker
scotb@...
Jul 17, 1999 3:15 pm
In addition to Mark Johnston's response, I thought I'd add a few points. ... This is a fantastic quote, when considered by itself.... he he he ... It all comes...
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John G Harris
niam@...
Jul 18, 1999 6:02 pm
I'd like to add to Mark Johnston's and Scot Becker's replies. On normalisation : Surely the most important reason for normalisation is to reduce the chance of...
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Herman Koester
hkoester@...
Jul 19, 1999 6:01 pm
Mark wrote: Stan Kimball recently wrote in Intelligent Enterprise..... Sorry to be a stickler, however it's "Ralph Kimball" Regards, Herman Koester Information...
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Terry Halpin
TerryH@...
Jul 19, 1999 6:43 pm
Just a few quick comments on Mark's email. ORM can be used to conceptually model anything that can be expressed as facts. For the same UoD there are many...
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Joseph Newcum
jnewcum@...
Jul 21, 1999 1:28 pm
... The purpose of normalization as stated in many texts is to remove certain insertion and update anomalies in relational databases. If (1) you don't intend...
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Kornelis, H.
HKor@...
Jul 21, 1999 1:28 pm
Allow me to pour in some of my thoughts as well. Disclaimer: I'm familiar with NIAM (the Dutch variant of ORM) and I know a lot less of the differences between...
114
Path
path@...
Jul 21, 1999 1:28 pm
... From: Scot A. Becker [mailto:scotb@...] Sent: Saturday, July 17, 1999 10:05 AM To: jcm@egroups.com Subject: [JCM] Re: E-R Model Viability and...
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Terry Halpin
TerryH@...
Jul 22, 1999 4:53 pm
I agree with almost all that Hugo says here. It's good to hear from the Dutch community of NIAM users. As a partial answer to his comment "I have to confess...
116
CHERI HOWE
CIJJ490@...
Jul 23, 1999 1:59 am
Hi Terry Thanks for including me on the jcm e-mail list. I really enjoy the exchange of ideas. I totally agree with your qualification. Good modelers try...
117
robin.bowes@...
Jul 26, 1999 12:58 pm
Hi, I'm looking for a little help with modelling a particular set of data. Here's the situation: Case has zero or more Hearings Hearing has Type(code) Hearing...
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scotb@...
Jul 26, 1999 6:30 pm
Hello Robin, Assuming I understand your UoD correctly, I think the solution is to use a pair-subset constraint. (Note: if you have Halpin’s book, he...
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scotb@...
Jul 26, 1999 6:34 pm
Hello Again, After reading my post, I think I explained _what_ to do but forgot to say _why_: The pair subset constraint will dictate that a Decision on a...
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Patrick Hallock
path@...
Jul 26, 1999 8:27 pm
Robin Firs to make sure I understand. Heading is of the Hearing Type. Heading results in Decision Type. Populations are: Hearing is of the Hearing Type H1...
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Terry Halpin
TerryH@...
Jul 27, 1999 1:13 am
Scot's solution is similar to the one I would suggest, but here are some qualifications. (1) I suspect that the association between HearingType and ...
122
robin.bowes@...
Jul 27, 1999 12:52 pm
Hi Terry, <156f63bc1f91d21189d000104b8d6aa034768-@everest> wrote: original article:http://www.egroups.com/group/jcm/?start=121 ... some ... roles. I'm not sure...
123
Terry Halpin
TerryH@...
Jul 28, 1999 12:35 pm
Hi Robin I did make the typo you mention: "HearingDescription" should be "HearingDecision". Sorry! Join constraints like the one here occur often in practice....
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John Hanna
jh@...
Jul 28, 1999 5:59 pm
This topic, model viability and completeness, and responses painting a UoD/model as static authoritative understanding (see extract below), made me wonder if...
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robin.bowes@...
Jul 28, 1999 8:09 pm
<156f63bc1f91d21189d000104b8d6aa03476a-@everest> wrote: original article:http://www.egroups.com/group/jcm/?start=123 ... No probs - just making sure I...
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robin.bowes@...
Jul 28, 1999 8:10 pm
... Further to my previous reply, I have discovered that I can achieve what I want by doing the following: Facts ===== Case(Ref) has Hearing Hearing has...
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Terry Halpin
TerryH@...
Jul 29, 1999 12:57 am
Robin, One final comment, as a follow-up to my earlier reply. Be sure that the external uniqueness constraint you are using for Hearing actually does apply....
128
Terry Halpin
TerryH@...
Jul 29, 1999 12:57 am
Yes Robin, I was about to give you that advice, but you beat me to it. You can always replace nesting by co-referencing if you want. In this case, I think it's...
129
robin.bowes@...
Jul 29, 1999 12:37 pm
<156f63bc1f91d21189d000104b8d6aa03476b-@everest> wrote: original article:http://www.egroups.com/group/jcm/?start=128 ... it. ... case, ... simply ... However ...
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scotb@...
Jul 30, 1999 3:01 am
<tap><tap><tap> Is this thing on? Howdy all, this is your moderator speaking.... I just thought I'd let everyone know that I will not be around to moderate...
