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<h1>22. Virtuoso Functions Guide - VAD_CHECK</h1>
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<h2>VAD_CHECK</h2>
<div class="refpurpose">Checks the package has not been altered since installation</div>
<div class="funcsynopsis">
<span class="funcdef">array DB.DBA.<span class="function">VAD_CHECK</span>
</span>
(<span class="paramdef">in <span class="parameter">package_name </span>varchar</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>This checks to see if the elements of the package are as they are
defined in the original distribution. A list of differing elements is returned.
This does not always indicate a corruption since a later version or another
package may add columns to tables, and some resources may be customized
after installation.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">package_name – </span>
name of package '/' version e.g: 'virtodp/1.0'</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>A list of differing elements is returned as an array of 3-item
structures: key, initial value, final value.</p>
</div>
<div class="refsect1">
<div class="refsect1title">See Also</div>
<p>
<a href="fn_vad_check_uninstallability.html">vad_check_uninstallability()</a>
</p>
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<a href="fn_vad_check_installability.html">vad_check_installability()</a>
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<a href="fn_vad_install.html">vad_install()</a>
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<a href="fn_vad_pack.html">vad_pack()</a>
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<a href="fn_vad_safe_exec.html">vad_safe_exec()</a>
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<a href="fn_vad_uninstall.html">vad_uninstall()</a>
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<a href="fn_vad_fail_check.html">vad_fail_check()</a>
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<a href="fn_vad_load_file.html">vad_load_file()</a>
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