The global catalog server.
A repository is a collection of all data definition, data relationships and report formats, i,e; meta data of a database.
Similar to a database program but with the capability to manage objects in it
Similar to a database program but with the capability to manage objects in it
, the server hosting the replica of Active Directory database is called Domain Controller. In it's database is all information about all objects, that exist in particular Active Directory domain.
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A Domain is a logical group of computers having versions of Microsoft Windows OS.All these computers shares a central database which is known as Active Directory.An Active Directory is basically group of computers, users, objects, etc.
If the objects are stored in the local object repository they are available for particular action only. If the objects are stored in the shared object repository they are available for entire application. Shared object repository occupies less memory than the local object repository.
The DS tools consist of the following commands DSQUERY - search for active directory objects matching criteria DSGET - retrieves selected attributes from active directory objects DSMOD - modify attributes for one or more active directory objects DSADD - create active directory objects DSMOVE - move active directory objects DSRM - removes/deletes active directory objects
All databases have a schema which is a formal definition (set of rules) which govern the database structure and types of objects and attributes which can be contained in the database. The schema contains a list of all classes and attributes in the forest.The schema keeps track of:ClassesClass attributesClass relationships such as subclasses (Child classes that inherit attributes from the super class) and super classes (Parent classes).Object relationships such as what objects are contained by other objects or what objects contain other objects.There is a class Schema object for each class in the Active Directory database. For each object attribute in the database, there is an attributeSchema object.PartitionsActive Directory objects are stored in the Directory Information Tree (DIT) which is broken into the following partitions:Schema partition - Defines rules for object creation and modification for all objects in the forest. Replicated to all domain controllers in the forest. Replicated to all domain controllers in the forest, it is known as an enterprise partition.Configuration partition - Information about the forest directory structure is defined including trees, domains, domain trust relationships, and sites (TCP/IP subnet group). Replicated to all domain controllers in the forest, it is known as an enterprise partition.Domain partition - Has complete information about all domain objects (Objects that are part of the domain including OUs, groups, users and others). Replicated only to domain controllers in the same domain. Partial domain directory partition - Has a list of all objects in the directory with a partial list of attributes for each object.The DIT holds a subset of Active Directory information and stores enough information to start and run the Active Directory service
All databases have a schema which is a formal definition (set of rules) which govern the database structure and types of objects and attributes which can be contained in the database. The schema contains a list of all classes and attributes in the forest.The schema keeps track of:ClassesClass attributesClass relationships such as subclasses (Child classes that inherit attributes from the super class) and super classes (Parent classes).Object relationships such as what objects are contained by other objects or what objects contain other objects.There is a class Schema object for each class in the Active Directory database. For each object attribute in the database, there is an attributeSchema object.PartitionsActive Directory objects are stored in the Directory Information Tree (DIT) which is broken into the following partitions:Schema partition - Defines rules for object creation and modification for all objects in the forest. Replicated to all domain controllers in the forest. Replicated to all domain controllers in the forest, it is known as an enterprise partition.Configuration partition - Information about the forest directory structure is defined including trees, domains, domain trust relationships, and sites (TCP/IP subnet group). Replicated to all domain controllers in the forest, it is known as an enterprise partition.Domain partition - Has complete information about all domain objects (Objects that are part of the domain including OUs, groups, users and others). Replicated only to domain controllers in the same domain. Partial domain directory partition - Has a list of all objects in the directory with a partial list of attributes for each object.The DIT holds a subset of Active Directory information and stores enough information to start and run the Active Directory service