webmin/ldap-server/help/schema.html

<header>Manage Schema</header>

The LDAP schema determines which object classes and attributes can be stored in
your LDAP database. This page allows you to select which schema types are
supported by your server, using the checkbox next to each schema file name.
Once you have made changes, click <b>Save</b> to update the OpenLDAP
configuration file, then <b>Apply Configuration</b> on the main page to
activate them. <p>

Be careful de-selecting existing schema files though, as this may break your
LDAP server if objects already exist in the database using the attributes
defined in those files. The <b>core</b> schema which contains the most basic
LDAP classes cannot be de-selected. <p>

The ordering of schemas is important, as later schemas can only refer to
attributes defined previously. You can re-order the list using the up and down
arrows on this page, but again this should be done with care for existing
schemas in order to avoid breaking the LDAP database. <p>

To see what classes and attributes a schema defines, click on it's <b>View</b>
link. If you are familiar with the schema format and want to edit a file,
click <b>Edit</b> instead. <p>

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