---
title: subschema
description: Auxiliary object class for entries holding LDAP schema definitions.
component: pingds
version: 8.1
page_id: pingds:schemaref:oc-subschema
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/oc-subschema.html
---

# subschema

Auxiliary object class for entries holding LDAP schema definitions.

|                       |                                                                                                                                                                                                                                                                                                  |
| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| *OID*                 | 2.5.20.1                                                                                                                                                                                                                                                                                         |
| *Names*               | subschema                                                                                                                                                                                                                                                                                        |
| *Class type*          | AUXILIARY: for use in augmenting attributes of entries that already have a structural object class.                                                                                                                                                                                              |
| *Optional attributes* | [attributeTypes](at-attributeTypes.html), [dITContentRules](at-dITContentRules.html), [dITStructureRules](at-dITStructureRules.html), [matchingRuleUse](at-matchingRuleUse.html), [matchingRules](at-matchingRules.html), [nameForms](at-nameForms.html), [objectClasses](at-objectClasses.html) |
| *Origin*              | [RFC 4512](https://datatracker.ietf.org/doc/html/rfc4512)                                                                                                                                                                                                                                        |
| *Schema file*         | 00-core.ldif                                                                                                                                                                                                                                                                                     |