... Ok, I've done this, and uploaded a PDF of the diagram into the Files section, under folder "Clifford Heath's". The existing usage of "totality" constraint...
... Oh, a couple more things. I added "PresenceConstraint" to include Uniqueness, Mandatory and Frequency all in one constraint type. MinOccurs and MaxOccurs...
Cross-posted and followups to information_modeling from ruby-talk. ... Hooray - someone else! ORM2 is a minor redrawing of the graphical symbols for ORM, I'm...
My interest in information modeling (IM) is tied to a notion I have that mechanically-assisted documentation of large systems is best accomplished by creating...
... I prefer to use ORM2, if only because it avoids the confusion that "ORM" causes (with Object-Relational Mapping). ... I don't recall exactly how I ran into...
... Interesting... almost the same thing but in the reverse direction from me. I want to be able to construct large systems using user-level (but formal,...
... Ok, fair enough. I just avoid the word ORM and say I'm working on fact-based modeling, or f-b information modeling. ... I'm not sure I know what a...
... I should preface my remarks by clarifying that I am not a graph theorist (nor a mathematician of any sort); just a programmer. So, my use of language may...
... Yes, that's what I thought you meant. ... But it *fundamentally* changes the structure you have, because you have nodes connected by edges, then you have...
... I think we're running into a language problem here; unfortunately, it is one that I have encountered before and have no good solution for. Sigh. But I...
... No, I think I understood you before. ... You've defined a meta-schema in ORM2 which you want to use to represent your hyper-graph schemas relationally -...
Hello, I have been asked to present a workshop on the benefits of ORM to essentially a group of managers who potentially may not be aware of database design....
Aswin had asked me these questions privately as well. In case it helps anyone else out there, this is how I answered him... I don't always use ORM, sometimes I...
Hi, This project/tool came across my radar, and I wanted to know if anyone had used it, and if you thought it would have tie-ins to ORM and NORMA. Both...
BRN, The NORMA team is very invested in generating alternate data structures. They moste recently looked into generating .NET TIERS. Templates that are part of...
Hi Jaron, Thanks for the quick and informative reply. Here in CT we'll have a NHibernate presentation later this month, through our local INETA chapter, and...
... (CC'ed into information_modeling - DataMapper is on RubyForge for those folk). It looks interesting Sam. I've not got very far into reading it, but I like...
Hi, My name is Sean O'Halpin. I first got interested in ORM through Terry Halpin's book "Conceptual Schema and Relational Database Design" (2nd ed. 1995). It's...
... You and I have the same vision - and that's why I created this group. In fact you've described only some of where this can go, but it's the core of it. ......
Hi all! My name is Tyler Young, and I was introduced to ORM in Terry's Information Modeling 1 class at Neumont. I'd done a bit of playing in PHP and MySQL, and...
... Yes it does appear so - I've just installed the chattr gem and it looks like we're pointing in the same direction (though my attempt is not published and...
I don't know what is needed in a textual ORM2 syntax, but I'd like to suggest trying YAML as a base for it. That is, use YAML syntax for the upper levels of...
... I've used both YAML (a little) and XML (a lot), but I've also written quite a few real parsers. Frankly I think the quick options are usually a cheap...
Tyler, Just got back from an Easter break and saw your message. I'm very glad to have you on this list, and I'm sure you'll be able to contribute positively to...
Hi, I've forgotten where I can across this link, but as the OMG submission document is based largely on work by Dr. Halpin, and has relevance to topics...
Good find Brian! I've just spent the last three hours reading a lot of it. It's pleasing to know that the OMG is adopting Terry's approach. Very timely too,...
Hi Clifford, Glad you found the link useful. I just have to make the time to read more of it. I'm not sure I like all the terms used for the definitions I...
... Quick is good, but we need something thorough, with an ANTLR parser that works for a variety of languages. That said, I'm not religious about it - I'm...
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