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  • Re: Modeling based an existence chain

    Thanks.  I'm trying to use various identifiers to clearly define my schema.  As far as this intermediate table it is an agreement that is pre-determined, but the order of presidence dictates that the existence of certain pieces takes presidence over other pieces regardless of wether they exist or not.  So I'm tryingt ...
    Posted to ORM Techniques (Forum) by mnnoon on 05-15-2011
  • Re: Modeling based an existence chain

    Yes that seems to reflect accurately the way I currently want to design the database, thanks.   The current model can have all three cases b/c the more info the better as well as nulls, I only put the exclusive or b/c I wanted to relay the importance of the existence of the first case as the most important, then the next importance ...
    Posted to ORM Techniques (Forum) by mnnoon on 05-15-2011
  • Re: Modeling based an existence chain

    Hi Marc,  Does the below seem to reflect accurately the fact types and business logic in view in the domain (of your "watered-down example")?   I gather that the actual, existing database has a "CostOfLiving" table. This seems like something that needs correcting, rather than reflecting accurately the fact types of ...
    Posted to ORM Techniques (Forum) by Andy Carver on 05-14-2011
  • Re: Modeling based an existence chain

    It seems to me that it might be easier for you to define some atomic facts and then expand as required. The following model illustrates this approach. Also, it's not good practice to use ".id" as a reference mode for every object. My model shows some alternatives. Ken Note: Click on the diagram to see the right hand side.
    Posted to ORM Techniques (Forum) by Ken Evans on 05-14-2011
  • Re: Modeling based an existence chain

     I forgot to add the country to the Cost of Living table.  But this is basically what I'm trying to do find the cost of living based the country code.  The Federal Agency takes, presidence, then comes the Public Organization(charity) then the Claimant's Country code is last.  I'm using this as a watered down ...
    Posted to ORM Techniques (Forum) by mnnoon on 05-14-2011
  • Re: Modeling based an existence chain

    Marc, Your description is not very clear. I can think of a couple of different things you might mean though, so I'll try to answer based on that. If I'm mistaken, please clarify and we'll have another go. One possibility is that you have a record which has a single country code, but the source or provenance or authority which ...
    Posted to ORM Techniques (Forum) by Anonymous on 05-12-2011
  • Re: Modeling based an existence chain

    Hi Marc, Sounds like an interesting modeling problem. I think it would make it clearer, however, if you could give one or two concrete examples (e.g. table rows) of data used in these fields... and maybe even offer an interpretation of these data use cases. If you can't share any of the real data, please invent one or two such examples. ...
    Posted to ORM Techniques (Forum) by Andy Carver on 05-11-2011
  • Modeling based an existence chain

    Hi, I am running into a problem modeling a table that covers where a county code exists or not in 5 different situations where a penalty is applied based on what the first in the chain country is not null and is mapped correctly.  I want to remodel the database but keep the business logic clearly defined in one or more tables and am looking ...
    Posted to ORM Techniques (Forum) by mnnoon on 05-11-2011
  • Re: Graphically depicting derived fact types

    I agree that is it is easy to apply a single color to both role boxes (with the fixed stencil), and still possible to apply color to individual role boxes, then that provides the ultimate flexibility needed. As for a context menu to indicate "derived" with some sort of visual notation, I think that would best be determined by feedback ...
    Posted to User experience (Forum) by Roger Cass on 05-09-2011
  • Re: Graphically depicting derived fact types

    Hi Roger, Due to your patience and persistence, I've some good news to report. I've found what the real problem was, with the behavior I was excoriating in Visio 12 and ff., and have fixed this problem in the stencil. So, you should now be able to re-color the whole fact type, or individual roles (if desired), without such anomalies as ...
    Posted to User experience (Forum) by Andy Carver on 05-09-2011
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