<?xml version="1.0" encoding="UTF-8"?>
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  <mainDescription>&lt;p class=&quot;MsoNormal&quot; style=&quot;MARGIN: 3pt 0cm&quot;>
    &lt;span style=&quot;mso-bidi-language: HE&quot;>A Fact Model represents structured business vocabulary with true statement like: A
    customer places an order. The fact model looks like the Object Role Model described by Halpin (2001). When the model
    starts to grow the notation become quickly invisible and no more helpful, so we do not encourage to follow this
    notation.&lt;/span> We prefer using UML class diagram showing just the entities, the associations and may be some
    characteristic as attributes of class.
&lt;/p>&lt;br />
&lt;p class=&quot;MsoNormal&quot; style=&quot;MARGIN: 0cm 0cm 0pt&quot;>
    &lt;span style=&quot;mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial&quot;>A Fact Model should always include elementary
    (atomic) fact type:&lt;/span>
&lt;/p>
&lt;p class=&quot;MsoNormal&quot; style=&quot;MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt&quot;>
    &lt;span style=&quot;FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 10.0pt&quot;>•&lt;/span>&lt;span
    style=&quot;FONT-SIZE: 7pt; FONT-FAMILY: 'Times New Roman'&quot;>&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/span>
    &lt;span style=&quot;mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial&quot;>Noun:&amp;nbsp; Customer, Order, Product&lt;/span>
&lt;/p>
&lt;p class=&quot;MsoNormal&quot; style=&quot;MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt&quot;>
    &lt;span style=&quot;FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 10.0pt&quot;>•&lt;/span>&lt;span
    style=&quot;FONT-SIZE: 7pt; FONT-FAMILY: 'Times New Roman'&quot;>&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/span>
    &lt;span style=&quot;mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial&quot;>Verb:&amp;nbsp; places, briefs&lt;/span>
&lt;/p></mainDescription>
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