Chapter 17 Using The Attribute Uniqueness Plug-In; Overview Of The Attribute Uniqueness Plug-In - Netscape DIRECTORY SERVER 6.02 - ADMINISTRATOR Administrator's Manual

The attribute uniqueness plug-in can be used to ensure that the attributes you
specify always have unique values in the directory. You must create a new instance
of the plug-in for every attribute for which you want to ensure unique values.
Netscape Directory Server (Directory Server), provides a uid uniqueness plug-in
that can be used to manage the uniqueness of the uid attribute.
This chapter describes the attribute uniqueness plug-in and the uid uniqueness
plug-in in the following sections:
• Overview of the Attribute Uniqueness Plug-In (page 469)
• Overview of the UID Uniqueness Plug-in (page 471)
• Attribute Uniqueness Plug-In Syntax (page 471)
• Creating an Instance of the Attribute Uniqueness Plug-In (page 474)
• Configuring Attribute Uniqueness Plug-Ins (page 475)
• Attribute Uniqueness Plug-In Syntax Examples (page 479)
• Replication and the Attribute Uniqueness Plug-In (page 481)

Overview of the Attribute Uniqueness Plug-In

The attribute uniqueness plug-in is a preoperation plug-in. This means that the
plug-in checks all update operations before the server performs an LDAP
operation. The plug-in determines whether the operation applies to an attribute
and a suffix that you have configured it to monitor.
Using the Attribute Uniqueness
Chapter 17
Plug-In
469