Wow, thanks for quick answer ... and special for attached document ...
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This document is very helpful and explain a lot.
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I can't still figure out meaning of columns <b>attributetype</b> and <b>geometrytype</b> in table <b>f_attributedefinition</b> 
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<b>Are they populated from some ENUMs, CONSTANTs or are they calculated somehow? </b><br />
<br />
>From your document:
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<b>attributetype</b> = FDO property type.
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<b>geometrytype</b> = Detailed geometry types allowed for this column.
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Here are some of the values from table <b>f_atributedefinition</b> from different databases 
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<table border="1" cellpadding="0" cellspacing="0" style="border-collapse:
 collapse;width:283pt" width="376">
        <colgroup>
            <col style="mso-width-source:userset;mso-width-alt:3986;width:82pt" 
                width="109" />
            <col style="mso-width-source:userset;mso-width-alt:2962;width:61pt" 
                width="81" />
            <col style="mso-width-source:userset;mso-width-alt:3291;width:68pt" 
                width="90" />
            <col style="mso-width-source:userset;mso-width-alt:3510;width:72pt" 
                width="96" />
        </colgroup>
        <tr height="20" style="height:15.0pt">
            <td height="20" style="height:15.0pt;width:82pt" width="109">
                Works with</td>
            <td class="style1" width="81">
                <b>columntype</b></td>
            <td class="style2" width="90">
                <b>attributetype</b></td>
            <td class="style3" width="96">
                <b>geometrytype</b></td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td class="style4" height="20">
                Point</td>
            <td class="style5">
                geometry</td>
            <td align="right" class="style5">
                1</td>
            <td align="right" class="style5">
                576</td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td class="style4" height="20">
                Point</td>
            <td class="style5">
                geometry</td>
            <td align="right" class="style5">
                1</td>
            <td align="right" class="style5">
                64</td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td height="20" style="height:15.0pt">
            </td>
            <td>
            </td>
            <td>
            </td>
            <td>
            </td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td class="style4" height="20">
                Line or..</td>
            <td class="style5">
                geometry</td>
            <td align="right" class="style5">
                2</td>
            <td align="right" class="style5">
                42112</td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td class="style4" height="20">
                Line or..</td>
            <td class="style5">
                geometry</td>
            <td align="right" class="style5">
                7</td>
            <td align="right" class="style5">
                126912</td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td class="style4" height="20">
                Line or..</td>
            <td class="style5">
                geometry</td>
            <td align="right" class="style5">
                2</td>
            <td align="right" class="style5">
                1152</td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td height="20" style="height:15.0pt">
            </td>
            <td>
            </td>
            <td>
            </td>
            <td>
            </td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td class="style4" height="20">
                Polygon or..</td>
            <td class="style5">
                geometry</td>
            <td align="right" class="style5">
                4</td>
            <td align="right" class="style5">
                256</td>
        </tr>
        <tr height="20" style="height:15.0pt">
            <td class="style4" height="20">
                Polygon or..</td>
            <td class="style5">
                geometry</td>
            <td align="right" class="style5">
                4</td>
            <td align="right" class="style5">
                84224</td>
        </tr>
    </table>
<br /><div class="signature"><hr>
Srecko Lipovsek<br />
Kaliopa d.o.o., Ljubljana, Slovenija
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