The Microsoft Active Directory schema contains formal definitions of every object class that can be created in an Active Directory forest. The schema also contains formal definitions of every attribute that can exist in an Active Directory object. This section provides the reference for each schema object and provides a brief explanation of the attributes, classes, and other objects that comprise the Active Directory schema.
In each of the reference topics, there will be a section for each operating system that the topic applies to. The following operating systems are currently supported.
| Platform | Name in topic |
| Microsoft Windows 2000 Server | Windows 2000 Server |
| Microsoft Windows Server 2003 | Windows Server 2003 |
| Microsoft Active Directory Application Mode (ADAM) | ADAM |
| Microsoft Windows Server 2003 R2 | Windows Server 2003 R2 |
| Microsoft Windows Server 2008 | Microsoft Windows Server 2008 |
If an operating system is not listed in the topic, the topic is not supported on that operating system. For example, if a topic only lists Windows Server 2003 and ADAM, then the topic does not apply to Windows 2000 Server.
For more information and an overview of the schema design, see Active Directory Schema. For more information about extending and customizing the schema, see Extending the Schema.
The following sections contain detailed information about the Active Directory schema elements.
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Build date: 11/1/2007