subschema subentry

A subschema subentry is a special entry within the Directory Server that provides information about the schema elements defined in the server. Attributes in this entry include:

ldapSyntaxes

The set of attribute syntax defined in the server schema.

matchingRules

The set of matching rule defined in the server schema.

matchingRuleUse

The set of matching rule uses defined in the server schema.

attributeTypes

The set of attribute type defined in the server schema.

objectClasses

The set of object class defined in the server schema.

nameForms

The set of name forms defined in the server schema.

dITContentRules

The set of DIT content rules defined in the server schema.

dITStructureRules

The set of DIT structure rules defined in the server schema.

Note that all of these are operational attribute and therefore will not be returned unless explicitly requested.

Also note that it is technically possible for directory servers to have multiple subschema subentries with different sets of schema definitions that govern different portions of the directory information tree. The schema that applies to any given entry may be determined by retrieving the subschemaSubentry virtual attribute from that entry. The directory server currently supports only a single schema, and by default publishes that schema at cn=schema.