. Active Directory Schema Documentation

About the Active Directory Schema

The Active Directory schema is the set of definitions that defines the kinds of objects, and the types of information about those objects, that can be stored in Active Directory. The definitions are themselves stored as objects so that Active Directory can manage the schema objects with the same object management operations used for managing the rest of the objects in the directory.

There are two types of definitions in the schema: attributes and classes. Attributes and classes are also referred to as schema objects or metadata.

Attributes are defined separately from classes. Each attribute is defined only once and can be used in multiple classes. For example, the Description attribute is used in many classes, but is defined once in the schema, assuring consistency.

Classes, also referred to as object classes, describe the possible directory objects that can be created. Each class is a collection of attributes. When you create an object, the attributes store the information that describes the object. The User class, for example, is composed of many attributes, including Network Address, Home Directory, and so on. Every object in Active Directory is an instance of an object class.

About this document

. This document lists new classes and attributes that . adds to the Active Directory, and explains how they are used, who can modify them and their impact on directory replication.

Class Index

#C .

Attribute Index

#A .

Classes

C

Class:

Common Name (CN):
LDAP Name:
Subclass Of:
Possible Superiors: #C
#C
Required Attributes: #A
Optional Attributes: #A
Usage:
Update Privilege:
Update Frequency:
Default Object Category:
Object Category:
RDN Attribute:
OID:
Schema GUID:

Attributes

A

Attribute:

Common Name (CN):
LDAP Name:
Contained In: #C
Usage:
Update Privilege:
Update Frequency:
Size Estimate (Bytes):
Low Value:
High Value:
Single Valued:
Ephemeral:
Member Of Partial Attribute Set:
Indexed:
Attribute ID:
Link ID:
Schema GUID:
Attribute Security GUID:
Type: DN OID String (case sensitive) String (case ignored) String (case sensitive) Numeric String ORName Boolean Integer Octet String Time String (case ignored) Presentation Address Access Point DN Security Descriptor Large Integer SID attributeSyntax=, oMSyntax=

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Version:.

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Country:
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