83 lines
3.4 KiB
HTML
83 lines
3.4 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-06" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<title>Directory Server (LDAP) - Indexing rules</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="rzahyindexrules"></a>
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<h4 id="rzahyindexrules">Indexing rules</h4>
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<p>Index rules attached to attributes make it possible to retrieve information
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faster. If only the attribute is given, no indexes are maintained. Directory
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Server provides the following indexing rules:</p>
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<ul>
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<li>Equality</li>
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<li>Ordering</li>
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<li>Approximate</li>
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<li>Substring</li>
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<li>Reverse</li></ul>
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<a name="wq27"></a>
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<h5 id="wq27">Indexing rules specifications for attributes</h5>
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<p>Specifying an indexing rule for an attribute controls the creation and
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maintenance of special indexes on the attribute values. This greatly improves
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the response time to searches with filters which include those attributes.
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The five possible types of indexing rules are related to the operations applied
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in the search filter.</p>
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<dl>
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<dt class="bold">Equality</dt>
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<dd> Applies to the following search operations:
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<ul>
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<li>equalityMatch '='</li></ul>For example:
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<pre class="xmp">"cn = John Doe"
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</pre>
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</dd>
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<dt class="bold">Ordering</dt>
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<dd>Applies to the following search operation:
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<ul>
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<li>greaterOrEqual '>='</li>
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<li>lessOrEqual '<='</li></ul>For example:
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<pre class="xmp">"sn >= Doe"</pre>
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</dd>
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<dt class="bold">Approximate </dt>
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<dd>Applies to the following search operation:
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<ul>
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<li>approxMatch '~='</li></ul>For example:
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<pre class="xmp">"sn ~= doe"</pre>
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</dd>
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<dt class="bold">Substring</dt>
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<dd>Applies to the search operation using the substring syntax:
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<ul>
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<li>substring '*'</li></ul>For example:
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<pre class="xmp">"sn = McC*"
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"cn = J*Doe"</pre>
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</dd>
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<dt class="bold">Reverse</dt>
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<dd>Applies to the following search operation:
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<ul>
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<li>'*' substring</li></ul>For example:
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<pre class="xmp">"sn = *baugh"</pre>
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</dd>
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</dl><p class="indatacontent">At a minimum, it is recommended that you specify equal indexing on any
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attributes that are to be used in search filters.</p>
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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