92 lines
4.6 KiB
HTML
92 lines
4.6 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) - The IBMAttributeTypes attribute</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="rzahyibmattras"></a>
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<h4 id="rzahyibmattras">The IBMAttributeTypes attribute</h4>
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<p>The IBMAttributeTypes attribute can be used to define schema information
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not covered by the LDAP Version 3 standard for attributes. Values of IBMAttributeTypes
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must comply with the following grammar:</p>
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<pre class="xmp">IBMAttributeTypesDescription = "(" whsp
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numericoid whsp
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[ "DBNAME" qdescrs ] ; at most 2 names (table, column)
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[ "ACCESS-CLASS" whsp IBMAccessClass whsp ]
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[ "LENGTH" wlen whsp ] ; maximum length of attribute
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[ "EQUALITY" [ IBMwlen ] whsp ] ; create index for matching rule
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[ "ORDERING" [ IBMwlen ] whsp ] ; create index for matching rule
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[ "APPROX" [ IBMwlen ] whsp ] ; create index for matching rule
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[ "SUBSTR" [ IBMwlen ] whsp ] ; create index for matching rule
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[ "REVERSE" [ IBMwlen ] whsp ] ; reverse index for substring
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whsp ")"
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IBMAccessClass =
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"NORMAL" / ; this is the default
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"SENSITIVE" /
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"CRITICAL" /
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"RESTRICTED" /
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"SYSTEM" /
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"OBJECT"
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IBMwlen = whsp len
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</pre>
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<dl>
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<dt class="bold">Numericoid </dt>
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<dd>Used to correlate the value in attributetypes with the value
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in IBMAttributeTypes.
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</dd>
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<dt class="bold">DBNAME </dt>
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<dd>You can provide 2 names at the most, if indeed 2 names are given. The
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first is the table name used for this attribute. The second is the column
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name used for the fully normalized value of the attribute in the table. If
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you provide only one name, it is used as the table name as well as the column
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name. If you do not provide any DBNAMEs, then a name based on the first seventeen
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characters of the attribute name (which must be unique) is used. Database
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table and column names are limited to seventeen characters.
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</dd>
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<dt class="bold">ACCESS-CLASS </dt>
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<dd>The access classification for this attribute type. If ACCESS-CLASS
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is omitted, it defaults to normal.
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</dd>
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<dt class="bold">LENGTH </dt>
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<dd>The maximum length of this attribute. The length is expressed
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as the number of bytes. Directory Server has a provision for specifying the
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length of an attribute. In the attributetypes value, the string:
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<pre class="xmp">( attr-oid ... SYNTAX syntax-oid{len} ... )</pre>can be used
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to indicate that the attributetype with oid attr-oid has a maximum length.
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</dd>
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<dt class="bold">EQUALITY, ORDERING, APPROX, SUBSTR, REVERSE </dt>
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<dd>If any of these attributes are used, an index is created for
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the corresponding matching rule. The optional length specifies the width of
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the indexed column. A single index is used to implement multiple matching
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rules. The Directory Server assigns a length of 500 when one is not provided
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by the user. The server can also use a shorter length than what the user requested
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when it makes sense to do so. For example, when the length of the index exceeds
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the maximum length of the attribute, the index length is ignored.
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</dd>
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</dl>
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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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