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<chapter xml:id='chap-schema'
|
xmlns='http://docbook.org/ns/docbook' version='5.0' xml:lang='en'
|
xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
|
xsi:schemaLocation='http://docbook.org/ns/docbook http://docbook.org/xml/5.0/xsd/docbook.xsd'
|
xmlns:xlink='http://www.w3.org/1999/xlink'
|
xmlns:xinclude='http://www.w3.org/2001/XInclude'>
|
<title>Managing Schema</title>
|
<indexterm><primary>Schema</primary></indexterm>
|
|
<para>Schema definitions describe the data, and especially the object classes
|
and attribute types that can be stored in the directory. By default OpenDJ
|
conforms strictly to LDAPv3 standards pertaining to schema definitions and
|
attribute syntax checking, ensuring that data stored is valid and properly
|
formed. Unless your data use only standard schema present in OpenDJ when
|
you install, then you must add additional schema definitions to account
|
the data your applications stored.</para>
|
|
<para>Out of the box, OpenDJ comes with many standard schema definitions.
|
In addition you can update and extend schema definitions while OpenDJ
|
is online. As a result you can add new applications requiring additional
|
data without stopping your directory service.</para>
|
|
<para>This chapter demonstrates how to change and to extend OpenDJ schema.
|
This chapter also identifies the standard schema definitions available when
|
you install OpenDJ.</para>
|
|
<section xml:id="about-schema">
|
<title>About Directory Schema</title>
|
|
<para>Directory schema, described in <link
|
xlink:href='http://tools.ietf.org/html/rfc4512'>RFC 4512</link>, define
|
the kinds of information you find in the directory, and can define how
|
the information are related. This chapter focuses primarily on two types
|
of directory schema definitions.</para>
|
|
<itemizedlist>
|
<listitem>
|
<para><firstterm>Attribute type</firstterm> definitions describe attributes
|
of directory entries, such as <literal>givenName</literal> or
|
<literal>mail</literal>.</para>
|
<para>Here is an example of an attribute type definition.</para>
|
<programlisting language="ldif"># Attribute type definition
|
attributeTypes: ( 0.9.2342.19200300.100.1.3 NAME ( 'mail' 'rfc822Mailbox' )
|
EQUALITY caseIgnoreIA5Match SUBSTR caseIgnoreIA5SubstringsMatch
|
SYNTAX 1.3.6.1.4.1.1466.115.121.1.26{256} X-ORIGIN 'RFC 4524' )</programlisting>
|
<para>Attribute type definitions start with an object identifier (OID),
|
and generally a short name or names that are easier to remember than the
|
OID. The attribute type definition can specify how attribute values
|
should be collated for sorting, and what syntax they use. The X-ORIGIN
|
is an extension to identify where the definition originated. When you
|
define your one schema, you likely want to provide an X-ORIGIN to help
|
you to track versions of definitions, and where the definitions came
|
from.</para>
|
</listitem>
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<listitem>
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<para><firstterm>Object class</firstterm> definitions identify the
|
attribute types that an entry must have, and may have. Examples of
|
object classes include <literal>person</literal> and
|
<literal>organizationalUnit</literal>.</para>
|
<para>Here is an example of an object class definition.</para>
|
<programlisting language="ldif"># Object class definition
|
objectClasses: ( 2.5.6.6 NAME 'person' SUP top STRUCTURAL MUST ( sn $ cn )
|
MAY ( userPassword $ telephoneNumber $ seeAlso $ description )
|
X-ORIGIN 'RFC 4519' )</programlisting>
|
<para>Entries all have an attribute identifying their object classes,
|
called <literal>objectClass</literal>.</para>
|
<para>Object class definitions start with an object identifier (OID), and
|
generally a short name that is easier to remember than the OID. The
|
definition here says that the person object class inherits from the top
|
object class, which is the top-level parent of all object classes. When
|
you view the objectclass attribute values on an entry, you see the list
|
of object classes that the entry takes. An entry can have one STRUCTURAL
|
object class inheritance branch, such as <literal>top</literal> -
|
<literal>person</literal> - <literal>organizationalPerson</literal> -
|
<literal>inetOrgPerson</literal>. Yet entries can have multiple
|
AUXILIARY object classes. The object class then defines the attribute
|
types that must be included, and the attribute types that may be included
|
on entries having the object class.</para>
|
</listitem>
|
|
<listitem>
|
<para>An <firstterm>attribute syntax</firstterm> constrains what directory
|
clients can store as attribute values.</para>
|
|
<para>An attribute syntax is identified in an attribute type definition by
|
its OID. String-based syntax OIDs are optionally followed by a number, set
|
between braces, that represents a minimum upper bound on the number of
|
characters in the attribute value. For example, in the attribute type
|
definition shown above, the syntax is
|
<literal>1.3.6.1.4.1.1466.115.121.1.26{256}</literal>. The syntax is an
|
IA5 string (composed of characters from the international version of the
|
ASCII character set) that can contain at least 256 characters.</para>
|
|
<para>You can find a table matching attribute syntax OIDs with their
|
human-readable names in RFC 4517, <link xlink:show="new"
|
xlink:href="http://tools.ietf.org/html/rfc4517#appendix-A">Appendix A.
|
Summary of Syntax Object Identifiers</link>. The RFC describes
|
attribute syntaxes in detail. Alternatively, you can see the attribute
|
syntaxes that OpenDJ supports by opening the OpenDJ Control Panel and
|
browsing to Schema > Manage Schema > Attribute Syntaxes. You can
|
also list them by using the <command>dsconfig</command> command.</para>
|
|
<para>Although attribute syntaxes are often specified in attribute type
|
definitions, directory servers do not always check that attribute values
|
comply with attribute syntaxes. OpenDJ directory server does tend to
|
enforce compliance by default, in particular for certificates, country
|
strings, directory strings, JPEG photos, and telephone numbers. The aim
|
is to avoid accumulating garbage in your directory data.</para>
|
|
<para>If you are trying unsuccessfully to import non-compliant data from a
|
more lenient directory server, you can either clean the data before
|
importing it, or if cleaning the data is not an option, read <xref
|
linkend="schema-legacy-support" />.</para>
|
|
<para>When creating your own attribute type definitions, use existing
|
attribute syntaxes where possible. If you must create your own attribute
|
syntax, then consider the extensions in
|
<xref linkend="attr-syntax-schema-definition-extensions" />.</para>
|
</listitem>
|
|
<listitem>
|
<para>Matching rules determine how the directory server compares attribute
|
values to assertion values for LDAP search and LDAP compare
|
operations.</para>
|
|
<para>For example, suppose you search with the filter
|
<literal>(uid=bjensen)</literal>. The assertion value in this case is
|
<literal>bjensen</literal>.</para>
|
|
<para>OpenDJ has the following schema definition for the user ID
|
attribute.</para>
|
|
<programlisting language="ldif"
|
>attributeTypes: ( 0.9.2342.19200300.100.1.1 NAME ( 'uid' 'userid' )
|
EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch
|
SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} X-ORIGIN 'RFC 4519' )</programlisting>
|
|
<para>When finding an equality match for your search, OpenDJ uses the
|
<literal>caseIgnoreMatch</literal> matching rule to check for user ID
|
attribute values that equal <literal>bjensen</literal> without regard
|
to case.</para>
|
|
<para>You can see the matching rules that OpenDJ supports by opening the
|
OpenDJ Control Panel and browsing to Schema > Manage Schema >
|
Matching Rules. Notice that many matching rules support string collation
|
in languages other than English. You can also list matching rules by
|
using the <command>dsconfig</command> command.</para>
|
|
<para>As you can read in examples like, <link
|
xlink:href="admin-guide#extensible-match-search"
|
xlink:role="http://docbook.org/xlink/role/olink"><citetitle>Search: List
|
Active Accounts</citetitle></link>, OpenDJ matching rules enable
|
directory clients to do more interesting searches than simply comparing
|
strings. That example shows how to search for users who have
|
authenticated in the last three months.</para>
|
</listitem>
|
</itemizedlist>
|
|
<para>OpenDJ exposes schema over protocol through the
|
<literal>cn=schema</literal> entry. OpenDJ stores the schema definitions
|
corresponding to the entry in LDIF under the
|
<filename>config/schema/</filename> directory. Many standard definitions
|
and definitions pertaining to the server configuration are included at
|
installation time.</para>
|
</section>
|
|
<section xml:id="update-schema">
|
<title>Updating Directory Schema</title>
|
<indexterm>
|
<primary>Replication</primary>
|
<secondary>Schema definitions</secondary>
|
</indexterm>
|
|
<para>OpenDJ directory server is designed to permit updating the list of
|
directory schema definitions while the server is running. As a result you can
|
add support for new applications that require new attributes or new kinds
|
of entries without interrupting the directory service. OpenDJ also replicates
|
schema definitions, so the schema you add on one replica are propagated to
|
other replicas without you having to intervene manually.</para>
|
|
<para>As it is easy to introduce typos into schema definitions, the
|
best way to start defining your own schema is with the OpenDJ Control
|
Panel. Open the Control Panel > Schema > Manage Schema window to
|
get started creating your custom object classes and attribute types.</para>
|
|
<mediaobject xml:id="figure-manage-schema">
|
<imageobject>
|
<imagedata fileref="images/Manage-Schema.png" format="PNG" />
|
</imageobject>
|
</mediaobject>
|
|
<para>As object classes reference attribute types, you first create
|
custom attribute types, and then create the object class that references
|
the attribute types.</para>
|
|
<para>Create a custom attribute type through the New Attribute window.</para>
|
|
<mediaobject xml:id="figure-custom-attrtype">
|
<imageobject>
|
<imagedata fileref="images/custom-attrtype.png" format="PNG" />
|
</imageobject>
|
</mediaobject>
|
|
<para>Using the New Object Class window, create an auxiliary object class
|
that allows your new custom attribute type. You set the type to Auxiliary
|
under Extra Options.</para>
|
|
<mediaobject xml:id="figure-custom-objclass">
|
<imageobject>
|
<imagedata fileref="images/custom-objclass.png" format="PNG" />
|
</imageobject>
|
</mediaobject>
|
|
<para>When you finish, the schema changes show up by default in the file
|
<filename>config/schema/99-user.ldif</filename>. Notice that the file name
|
starts with a number, 99. This number is larger than the numbers prefixing
|
other schema file names. In fact, OpenDJ reads the schema files in sorted
|
order, reading schema definitions as they occur. If OpenDJ reads a schema
|
definition for an object class before it has read the definitions of the
|
attribute types mentioned in the object class definition, then it displays
|
an error. Therefore, when naming your schema file, make sure the name appears
|
in the sorted list of file names <emphasis>after</emphasis> all the schema
|
files containing definitions that your schema definitions depends on. The
|
default file name for your schema, <filename>99-user.ldif</filename>, ensures
|
that your definitions load only after all of the schema files installed by
|
default.</para>
|
|
<para>You can create this file in the lab using the Control Panel, and then
|
apply the definitions in production by adapting the content for use with the
|
<command>ldapmodify</command> command, for example.</para>
|
|
<screen>$ cat config/schema/99-user.ldif
|
dn: cn=schema
|
objectClass: top
|
objectClass: ldapSubentry
|
objectClass: subschema
|
cn: schema
|
attributeTypes: ( temporary-fake-attr-id NAME 'myCustomAttribute' EQUALITY case
|
IgnoreMatch ORDERING caseIgnoreOrderingMatch SUBSTR caseIgnoreSubstrings
|
Match SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 USAGE userApplications )
|
objectClasses: ( temporary-fake-oc-id NAME 'myCustomObjClass
|
' SUP top AUXILIARY MAY myCustomAttribute )
|
modifiersName: cn=Directory Manager,cn=Root DNs,cn=config
|
modifyTimestamp: 20110620095948Z
|
</screen>
|
|
<para>To test your schema definition, add the object class and attribute
|
to an entry.</para>
|
|
<screen>$ cat custom-attr.ldif
|
dn: uid=bjensen,ou=People,dc=example,dc=com
|
changetype: modify
|
add: objectClass
|
objectClass: myCustomObjClass
|
-
|
add: myCustomAttribute
|
myCustomAttribute: Testing 1, 2, 3...
|
|
$ ldapmodify
|
--port 1389
|
--bindDN "cn=Directory Manager"
|
--bindPassword password
|
--filename custom-attr.ldif
|
Processing MODIFY request for uid=bjensen,ou=People,dc=example,dc=com
|
MODIFY operation successful for DN uid=bjensen,ou=People,dc=example,dc=com
|
$ ldapsearch
|
--port 1389
|
--baseDN dc=example,dc=com
|
uid=bjensen
|
myCustomAttribute
|
dn: uid=bjensen,ou=People,dc=example,dc=com
|
myCustomAttribute: Testing 1, 2, 3...
|
</screen>
|
|
<para>In addition to supporting the standard schema definitions that are
|
described in <link xlink:href="http://tools.ietf.org/html/rfc4512#section-4.1"
|
>RFC 4512, section 4.1</link>, OpenDJ also supports the following extensions
|
that you can use when adding your own definitions.</para>
|
|
<variablelist xml:id="general-schema-definition-extensions">
|
<title>Extensions for All Schema Definitions</title>
|
|
<indexterm>
|
<primary>Schema</primary>
|
<secondary>Schema definition extensions</secondary>
|
</indexterm>
|
|
<varlistentry>
|
<term><literal>X-ORIGIN</literal></term>
|
<listitem>
|
<para>Used to specify the origin of a schema element. Examples include
|
<literal>X-ORIGIN 'RFC 4519'</literal>, <literal>X-ORIGIN
|
'draft-ietf-ldup-subentry'</literal>, and <literal>X-ORIGIN
|
'OpenDJ Directory Server'</literal>.</para>
|
</listitem>
|
</varlistentry>
|
|
<varlistentry>
|
<term><literal>X-SCHEMA-FILE</literal></term>
|
<listitem>
|
<para>Used to specify the relative path to the schema file containing the
|
schema element such as <literal>X-SCHEMA-FILE '00-core.ldif'</literal>.
|
Schema definitions are located by default in
|
<filename>/path/to/opendj/config/schema/*.ldif</filename> files.</para>
|
</listitem>
|
</varlistentry>
|
</variablelist>
|
|
<variablelist xml:id="attr-syntax-schema-definition-extensions">
|
<title>Extensions for Attribute Syntax Descriptions</title>
|
|
<indexterm>
|
<primary>Schema</primary>
|
<secondary>Schema definition extensions</secondary>
|
</indexterm>
|
|
<varlistentry>
|
<term><literal>X-ENUM</literal></term>
|
<listitem>
|
<para>Used to define a syntax that is an enumeration of values. The
|
following attribute syntax description defines a syntax allowing four
|
possible attribute values for example.</para>
|
<programlisting language="ldif"
|
>ldapSyntaxes: ( security-label-syntax-oid DESC 'Security Label'
|
X-ENUM ( 'top-secret' 'secret' 'confidential' 'unclassified' ) )</programlisting>
|
</listitem>
|
</varlistentry>
|
|
<varlistentry>
|
<term><literal>X-PATTERN</literal></term>
|
<listitem>
|
<para>used to define a syntax based on a regular expression pattern, where
|
valid regular expressions are those defined for <link xlink:show="new"
|
xlink:href="http://docs.oracle.com/javase/6/docs/api/java/util/regex/Pattern.html"
|
><literal>java.util.regex.Pattern</literal></link>. The following attribute
|
syntax description defines a simple, lenient SIP phone URI syntax
|
check.</para>
|
<programlisting language="ldif"
|
>ldapSyntaxes: ( simple-sip-uri-syntax-oid DESC 'Lenient SIP URI Syntax'
|
X-PATTERN '^sip:[a-zA-Z0-9.]+@[a-zA-Z0-9.]+(:[0-9]+)?$' )</programlisting>
|
</listitem>
|
</varlistentry>
|
|
<varlistentry>
|
<term><literal>X-SUBST</literal></term>
|
<listitem>
|
<para>Used as a fallback to substitute a defined syntax for one that
|
OpenDJ does not implement. The following example substitutes Directory
|
String syntax, which has OID 1.3.6.1.4.1.1466.115.121.1.15, for a syntax
|
that OpenDJ does not implement.</para>
|
<programlisting language="ldif"
|
>ldapSyntaxes: ( non-implemented-syntax-oid DESC 'Not Implemented in OpenDJ'
|
X-SUBST '1.3.6.1.4.1.1466.115.121.1.15' )</programlisting>
|
</listitem>
|
</varlistentry>
|
</variablelist>
|
|
<variablelist xml:id="attr-type-schema-definition-extensions">
|
<title>Extension for Attribute Type Descriptions</title>
|
|
<indexterm>
|
<primary>Schema</primary>
|
<secondary>Schema definition extensions</secondary>
|
</indexterm>
|
|
<varlistentry>
|
<term><literal>X-APPROX</literal></term>
|
<listitem>
|
<para><literal>X-APPROX</literal> is used to specify the approximate
|
matching rule to use for a given attribute type when not using the default,
|
which is the <link xlink:href="http://aspell.net/metaphone/"
|
xlink:show="new">double metaphone approximate match</link>.</para>
|
</listitem>
|
</varlistentry>
|
</variablelist>
|
</section>
|
|
<section xml:id="schema-legacy-support">
|
<title>Relaxing Schema Checking to Import Legacy Data</title>
|
<indexterm>
|
<primary>Schema</primary>
|
<secondary>Legacy data</secondary>
|
</indexterm>
|
|
<para>By default, OpenDJ accepts data that follows the standards in terms of
|
what is allowed and what is rejected. You might have legacy data from a
|
directory service that is more lenient, allowing non-standard constructions
|
such as multiple structural object classes per entry, not checking attribute
|
value syntax, or even not respecting schema definitions.</para>
|
|
<para>For example, when importing data with multiple structural object
|
classes defined per entry, you can relax schema checking to warn rather
|
than reject entries having this issue.</para>
|
|
<screen>$ dsconfig
|
set-global-configuration-prop
|
--hostname opendj.example.com
|
--port 4444
|
--bindDN "cn=Directory Manager"
|
--bindPassword password
|
--set single-structural-objectclass-behavior:warn
|
--trustAll
|
--no-prompt</screen>
|
|
<para>You can allow attribute values that do not respect the defined syntax
|
with the <command>dsconfig</command> command as well.</para>
|
|
<screen>$ dsconfig
|
set-global-configuration-prop
|
--hostname opendj.example.com
|
--port 4444
|
--bindDN "cn=Directory Manager"
|
--bindPassword password
|
--set invalid-attribute-syntax-behavior:warn
|
--trustAll
|
--no-prompt</screen>
|
|
<para>You can even turn off schema checking altogether, although turning
|
off schema checking only really makes sense when you are absolutely sure
|
that the entries and attribute values respect the schema definitions, and
|
you simply want to turn off schema checking temporarily to speed up import
|
processing.</para>
|
|
<screen>$ dsconfig
|
set-global-configuration-prop
|
--hostname opendj.example.com
|
--port 4444
|
--bindDN "cn=Directory Manager"
|
--bindPassword password
|
--set check-schema:false
|
--trustAll
|
--no-prompt</screen>
|
</section>
|
|
<section xml:id="standard-schema">
|
<title>Standard Schema Included With OpenDJ</title>
|
<indexterm>
|
<primary>Schema</primary>
|
<secondary>Bundled definitions</secondary>
|
</indexterm>
|
|
<para>The following files under <filename>config/schema/</filename>
|
contain schema definitions out of the box.</para>
|
|
<variablelist>
|
<varlistentry>
|
<term>
|
<filename>00-core.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains a core set of attribute type and objectlass
|
definitions from several standard LDAP documents, including
|
draft-ietf-boreham-numsubordinates, draft-findlay-ldap-groupofentries,
|
draft-furuseth-ldap-untypedobject, draft-good-ldap-changelog,
|
draft-ietf-ldup-subentry, draft-wahl-ldap-adminaddr, RFC 1274, RFC 2079,
|
RFC 2256, RFC 2798, RFC 3045, RFC 3296, RFC 3671, RFC 3672, RFC 4512,
|
RFC 4519, RFC 4523, RFC 4524, RFC 4530, RFC 5020, and X.501.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>01-pwpolicy.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from
|
draft-behera-ldap-password-policy, which defines a mechanism for storing
|
password policy information in an LDAP directory server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>02-config.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains the attribute type and objectclass definitions
|
for use with the directory server configuration.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-changelog.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from
|
draft-good-ldap-changelog, which defines a mechanism for storing
|
information about changes to directory server data.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-rfc2713.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 2713, which defines a
|
mechanism for storing serialized Java objects in the directory
|
server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-rfc2714.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 2714, which defines a
|
mechanism for storing CORBA objects in the directory server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-rfc2739.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 2739, which defines a
|
mechanism for storing calendar and vCard objects in the directory server.
|
Note that the definition in RFC 2739 contains a number of errors, and this
|
schema file has been altered from the standard definition in order to fix
|
a number of those problems.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-rfc2926.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 2926, which defines a
|
mechanism for mapping between Service Location Protocol (SLP)
|
advertisements and LDAP.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-rfc3112.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 3112, which defines
|
the authentication password schema.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-rfc3712.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 3712, which defines a
|
mechanism for storing printer information in the directory server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>03-uddiv3.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 4403,
|
which defines a mechanism for storing UDDIv3 information in the directory
|
server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>04-rfc2307bis.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from the
|
draft-howard-rfc2307bis specification, used to store naming service
|
information in the directory server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>05-rfc4876.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions from RFC 4876, which defines
|
a schema for storing Directory User Agent (DUA) profiles and preferences
|
in the directory server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>05-samba.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions required when storing Samba
|
user accounts in the directory server.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>05-solaris.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains schema definitions required for Solaris and
|
OpenSolaris LDAP naming services.</para>
|
</listitem>
|
</varlistentry>
|
<varlistentry>
|
<term>
|
<filename>06-compat.ldif</filename>
|
</term>
|
<listitem>
|
<para>This file contains the attribute type and objectclass definitions
|
for use with the directory server configuration.</para>
|
</listitem>
|
</varlistentry>
|
</variablelist>
|
</section>
|
</chapter>
|
