LDAP Schema documents
A schema defines what can be stored in the directory. The Domino LDAP Schema database (SCHEMA.NSF) contains a document for each element defined in the Domino schema. There are three kinds of LDAP Schema documents corresponding to different elements of the schema: Object classes, Attribute types, and Syntaxes. These documents show what the schema is for the servers in a domain that run the LDAP service.

The LDAP service automatically creates the Domino LDAP Schema database on the administration server for the Domino Directory, and creates documents for each default schema element. Administrators can add schema elements, that is, extend the schema, by creating new documents themselves; initially these new documents are draft documents, but when approved by an administrator, they are processed by an LDAP service process called the Schema daemon to become official schema elements.

For more information on creating LDAP Schema documents, see Extending the schema using the Domino LDAP Schema database.