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<td class="slogan">Database&nbsp;Subsetting&nbsp;Tool</td>
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<big><font size="4"><em></em></font></big>
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<font size="4"><li><big><em><font size="4"><big><em>Entity
<span style="font-family: monospace;">E</span></em></big>-
a row inside a database table<em></em>. </font>
</em></big></li>
<li><big><em><big><em><font size="4">Reference <span
style="font-family: monospace;">(E</span></font><small
style="font-family: monospace;"><small><small><font size="1">1</font></small></small></small><span
style="font-family: monospace;"><font size="4">, E</font></span><small
style="font-family: monospace;"><small><small><font size="1">2</font><big><span
style="font-family: monospace;"><font size="2">)</font></span></big></small></small></small><span
style="font-family: monospace;"></span></em><font size="4">&nbsp; - </font></big>ordered
pair of two Entities <em style="font-family: monospace;">E<small><small><font
size="1">1</font></small></small></em><span
style="font-family: monospace;"></span>and <em
style="font-family: monospace;">E<small><small><font size="1">2</font></small></small></em><span
style="font-family: monospace;">.</span>
</em></big></li>
<li><big><em><font size="4"><big><em>Association</em></big>-
symetrical set of references. </font><big><em><span
style="font-family: monospace;"><font size="4">(E</font></span><small
style="font-family: monospace;"><small><small><font size="1">1</font></small></small></small><span
style="font-family: monospace;"><font size="4">, E</font></span><small
style="font-family: monospace;"><small><small><font size="1">2</font><big><span
style="font-family: monospace;"><font size="2">) &lt;=&gt; </font></span></big></small></small></small></em></big><big><em><span
style="font-family: monospace;"><font size="4">(E</font></span><small
style="font-family: monospace;"><small><small><span
style="font-family: monospace;"><font size="1">2</font></span></small></small></small><span
style="font-family: monospace;"><font size="4">, E</font></span><small
style="font-family: monospace;"><small><small><font size="1">1</font><big><span
style="font-family: monospace;"><font size="2">)</font></span></big></small></small></small></em></big>
</em></big></li>
<li><big><em><font size="4"><big><span
style="font-style: italic;">Join condition</span></big></font><span
style="font-family: monospace;">JC</span> of Association <span
style="font-family: monospace;">A</span> - specifies an association
between two tables: <br>
<span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
A:={(E<small><font size="2">1</font></small>, E<small><font size="2">2<span
style="font-family: monospace;">(</span></font></small>|E<small><font
size="2">1</font></small></span><strong style="font-family: monospace;">?</strong><strong
style="font-weight: normal; font-family: monospace;">T<small><font
size="2">1</font></small></strong><strong
style="font-family: monospace;">, </strong><span
style="font-family: monospace;">E<small><span style="font-family: mon;"><font
size="2">2</font></span></small></span><strong
style="font-family: monospace;"></strong><strong
style="font-weight: normal; font-family: monospace;">?T<small><font
size="2">2</font></small>, JC(</strong><span
style="font-family: monospace;">E<small><font size="2">1</font></small>,
E<small><font size="2">2</font></small>) or JC(</span><big><em><span
style="font-family: monospace;"><font size="4">E</font></span><small
style="font-family: monospace;"><small><small><font size="1">2</font></small></small></small><span
style="font-family: monospace;"><font size="4">, E</font></span><small
style="font-family: monospace;"><small><small><font size="1">1<big><span
style="font-family: monospace;"></span></big></font></small></small></small></em></big><span
style="font-family: monospace;">)</span><span
style="font-family: monospace;">}</span>
</em></big></li>
<li><big><em><font size="4"><em><big>Restriction</big>
on an Association <span style="font-family: monospace;">A </span></em>-
subset of <span style="font-family: monospace;">A.</span></font>
</em></big></li>
<li><big><em><em><big><font size="4">Restriction
condition</font></big></em><em>
<small><font size="2">RC</font></small> - specifies a
restriction <span style="font-family: monospace;">R</span> on <span
style="font-family: monospace;">A</span>: <span
style="font-family: monospace;">R:={(E<small><font size="2">1</font></small>,
E<small><font size="2">2</font></small>)|{E<small><font size="2">1</font></small>,
E<small><font size="2">2</font></small>}</span></em><strong
style="font-family: monospace;">?</strong><span
style="font-family: monospace;">A, RC</span><em
style="font-family: monospace;">(E<small><font size="2">1</font></small>,
E<small><font size="2">2</font></small></em><span
style="font-family: monospace;">)}</span>
</em></big></li>
<li><big><em><font size="4"><em><big>Subject<small> -
set of Entities to be exported.</small></big></em></font>
</em></big></li>
<li><big><em><font size="4"><big><small><big><span
style="font-style: italic;">transitive closure</span></big>
of S - smallest set containing S and all entities referenced by an
entity inside the closure. The transitive closure of the subject </small></big><big><small>according
to the resticted associations is exactly the set that Jailer will
export.</small></big></font></em></big></li>
</font>
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