An active directory schema allows the user to perform a detailed search for an individual, place or other piece of information. A well designed schema represents software that gives the user access to information within an organization. The structure becomes more detailed as the schema becomes detailed.
From active directory schema snap-in.But before that you have to register the schmmgmt.dll file by using regsvr32.exeschmmgmt.dll @ cmd prompt
Using the Active Directory Schema snap-in, add an attribute to the user accountproperty for Employer ID Code.
The schema is the Active Directory component that defines all the objects and attributes that the directory service uses to store data.
A collection of domains that share a common schema.
LDIFDE is a robust utility. This utility enabled you to import/export information from/to Active Directory. LDIFDE queries any available domain controller to retrieve/update AD information. Ldifde creates, modifies, and deletes directory objects on computers running Windows Server 2003 operating systems or Windows XP Professional. You can also use Ldifde to extend the schema, export Active Directory user and group information to other applications or services, and populate Active Directory with data from other directory services
schema attributes
Active Directory NC (Naming Context's)Active Directory consists of three partitions or naming contexts (NC) Domain, Configuration and Schema Naming ContextsEach are replicated independentlyAn Active Directory forest has single schema and configuration Every domain controller (DC) holds a copy of each (schema, configuration NC's)Forest can have multiple domains Every domain controller in a domain holds a copy of the domain NC
Active Directory NC (Naming Context's)Active Directory consists of three partitions or naming contexts (NC) Domain, Configuration and Schema Naming ContextsEach are replicated independentlyAn Active Directory forest has single schema and configuration Every domain controller (DC) holds a copy of each (schema, configuration NC's)Forest can have multiple domains Every domain controller in a domain holds a copy of the domain NC
Active Directory NC (Naming Context's) * Active Directory consists of three partitions or naming contexts (NC) ** Domain, Configuration and Schema Naming Contexts * Each are replicated independently * An Active Directory forest has single schema and configuration ** Every domain controller (DC) holds a copy of each (schema, configuration NC's) * Forest can have multiple domains ** Every domain controller in a domain holds a copy of the domain NC
A collection of domains that share a common schema
The Schema and Configuration partition
The Active Directory Schema defines the types of user,printer objects to be created in the domain