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  • Re: What is a fact?

    &nbsp;Hi Niels, There are two posts preceeding your &quot;quick question&quot; post. Your quick question post is the third in the thread and this one is the fourth. Let me know if this solves your problem and I will removethis post and your quick question post. Ken
    Posted to Philosophy (Forum) by Ken Evans on Wed, Mar 19 2014
  • Re: Exclusion constraints

    &nbsp;[quote user=&quot;Niels Hoogeveen&quot;]We are in full agreement with respect to gravity. It&#39;s not a fact, which can easily be shown since it is a noun.[/quote] Oops - my poor use of language. What I should have said it was not until about 1686 that a human observer uttered the proposition that: &nbsp; &quot;Any two bodies in the ...
    Posted to Extensions to ORM (Forum) by Ken Evans on Wed, Mar 19 2014
  • What is a fact?

    Note to Niels: Your original proposition was asserted in the &quot;Extensions to ORM&quot; thread but the proposition is about the Philosophy of ORM so I moved the discussion to this new thread in the &quot;Philosophy&quot; section.&nbsp; In this thread, you asserted the following proposition: &quot;A fact is nothing more and nothing less than a ...
    Posted to Philosophy (Forum) by Ken Evans on Wed, Mar 19 2014
  • Re: Exclusion constraints

    Niels, Since this is more of a &quot;how to&quot; than an &quot;extension to ORM&quot; I have started this new thread&nbsp;in the ORM Techniques section. Please will you make a &quot;re-start&quot; post in the new thread that explains what you want to discuss.&nbsp; Thanks Ken&nbsp;
    Posted to Extensions to ORM (Forum) by Ken Evans on Wed, Mar 19 2014
  • How to Model a bi-temporal fact in ORM

    &nbsp;This is a new thread to discuss the question of how to model a bi-temporal fact in ORM as requested by Niels Hoogeveen in this thread.
    Posted to ORM Techniques (Forum) by Ken Evans on Wed, Mar 19 2014
  • Re: Exclusion constraints

    Hi Niels, Yes - it is all about Philosophy - where I use the term to mean &quot;The practice of making sense of the world&quot;. [quote user=&quot;Niels Hoogeveen&quot;]Does there exist something like a &quot;naked&quot; fact? [/quote]&nbsp; I would say &quot;no&quot; - Facts only exist because they have been asserted by a person. (A fact maybe ...
    Posted to Extensions to ORM (Forum) by Ken Evans on Tue, Mar 18 2014
  • Re: Exclusion constraints

    &nbsp;[quote user=&quot;Clifford Heath&quot;]Ken, yours may be a fair comment in many cases [/quote] Clifford, It was not my intention to make a &quot;fair comment.&quot;&nbsp; My intention was to assert propositions about the nature of the relationship between &quot;facts&quot; and &quot;beliefs&quot;. Specifically: a)&nbsp; A belief ...
    Posted to Extensions to ORM (Forum) by Ken Evans on Tue, Mar 18 2014
  • Re: Exclusion constraints

    Hello Niels, Here is a model that (I hope) explains what I am trying to say. Which is that a belief about a fact is not that same thing as the fact itself. Although this example is about job start and end times, the model is a general model that can be applied to any fact. A person utters a fact.&nbsp;(By &quot;utter&quot; I mean that the ...
    Posted to Extensions to ORM (Forum) by Ken Evans on Tue, Mar 18 2014
  • Re: Exclusion constraints

    Clifford, Firstly, &quot;Belief&quot; &nbsp;does not exist as an independent thing. For a belief to exist, there must be at least one person (who is alive today or is not alive today) who holds (or used to hold) that belief. (e.g. Geocentricity) Secondly, what people believe or do not believe can be expressed as an elementary fact. &nbsp; Thus, ...
    Posted to Extensions to ORM (Forum) by Ken Evans on Tue, Mar 18 2014
  • Re: Exclusion constraints

    Hi Niels, Just to keep the ball rolling until Terry gets a chance to reply, here is another straw man model that relates to your last post. Please feel free to comment on or shoot at my model. It will help others to see what can be done and either how to do it or how not to do it. Ken
    Posted to Extensions to ORM (Forum) by Ken Evans on Mon, Mar 17 2014
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