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  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    Dear Brian, The first priority is to develop a conceptual schema in SBVR, CogNIAM and ORM that contains a. a complete list of concept definitions b. a complete list of associated fact types c. a complete list of associated fact type forms d. a complete list of the asociated rules  to understand the communication from a user point of ...
    Posted to SBVR (Forum) by Sjir Nijssen on Mon, May 5 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

     Hello, Sjir, The idea of modeling the OF website has both positive, and negative aspects.  I saw Ken's reply - and his remarks are understandable.  I started an ORM model for a website of my own, and there are some daunting aspects.  If you intend to create a complete model (one that covers all the aspects of a website, ...
    Posted to SBVR (Forum) by Brian Nalewajek on Mon, May 5 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    Hi Sjir, That's an interesting idea but it sounds like quite a big project (probably several weeks if not months work) Right now I'm finding it hard to spare time for manageing the website so I'm sorry but I could not committ to such a project. And anyway, I don't see what benefit I might get from doing such a project. You ...
    Posted to SBVR (Forum) by Ken Evans on Sun, May 4 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    Ken, Would it be an idea that we start to develop the conceptual schema of this website in both CogNIAM, ORM and SBVR? It  could be a good example of a very practical and relevant application.  Kind regards  Sjir  
    Posted to SBVR (Forum) by Sjir Nijssen on Sun, May 4 2008
  • The Stuff of Thought

    Hi, As the methods of Object Role Modeling rely as heavly on language, as they do on logic, I'd like to suggest an accessible book on the nature of language: The stuff of thought : language as a window into human nature     Pinker, Steven, 1954- ...
    Posted to Books (Forum) by Brian Nalewajek on Wed, Apr 30 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    Terry, Start date without end date> My domain model says that "There is always an end date" in that if someone takes up residence then they are resident from the day they register to either yesterday or the day on which they chose to discontinue residence. This allows easy reporting for "How many resident-days have we had ...
    Posted to SBVR (Forum) by Ken Evans on Wed, Apr 30 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    This is a response to both Ken and Sjir's previous responses. First, Ken, your new model now has the subset constraint on the correct arguments but it is pointed in the wrong direction (assuming we agree that a habitation may have a start date without necessarily having an end date). Second, Ken's model includes a uniqueness ...
    Posted to SBVR (Forum) by Terry Halpin on Tue, Apr 29 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    Hi Terry, Thanks for pointing out my "oops!" I have corrected the file in the library to prevent others from being misled. Interesting isn't it that there is such hidden complexity in seemingly simple facts! One way of avoiding the "NULL" problem is to populate the second fact with today's date. (OK, yesterday's ...
    Posted to SBVR (Forum) by Ken Evans on Tue, Apr 29 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    Terry, Lex and Ken, First and for all thanks for your contributions to this thread. What would the conceptual world be without real examples? I said in the start of this discussion just to consider some other forms of atomicity.  Well here is my preferred model: ft1: SBVR expert <SBVR expert> started habitation on ...
    Posted to SBVR (Forum) by Sjir Nijssen on Tue, Apr 29 2008
  • Re: CogNIAM and ORM as business practices of SBVR - Habitation!

    Hi Ken Thanks for your model, which does correctly identify two ternaries that are derivable from the original example. However, your model has some problems. As a trivial error, the subset constraint in your model is wrong (it should go between the person-country role-pairs).  But the main problem is that it assumes COMPLETE ...
    Posted to SBVR (Forum) by Terry Halpin on Tue, Apr 29 2008
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