2.5.21.6 - Object Classes

OID value: 2.5.21.6

OID description:
The objectClasses operational attribute defines the object classes which are in force within a subschema.

The objectClasses operational attibute is multi-valued; each value defines one object class.

objectClasses ATTRIBUTE ::= {
        WITH SYNTAX ObjectClassDescription
        EQUALITY MATCHING RULE objectIdentifierFirstComponentMatch
        USAGE directoryOperation
        IDENTIFIED BY id-soa-objectClasses
}

ObjectClassDescription ::= SEQUENCE {
	identifier OBJECT-CLASS.&id,
	name SET OF DrectoryString { ub-schema } OPTIONAL,
        description DirectoryString { ub-schema } OPTIONAL,
        obsolete BOOLEAN DEFAULT FALSE,
	information [0] ObjectClassInformation
}

ObjectClassInformation ::= SEQUENCE {
	subclassOf SET OF OBJECT-CLASS.&id OPTIONAL,
	kind ObjectClassKind DEFAULT structural,
	mandatories [3] SET OF ATTRIBUTE.&id OPTIONAL,
	optionals [4] SET OF ATTRIBUTE.&id OPTIONAL
}

See also the OID Repository website reference for 2.5.21.6

Superior references

• 2.5.21 - X.500 schema operational attributes
• 2.5 - X.500 Directory Services
• 2 - ISO/ITU-T jointly assigned OIDs
• Top of OID tree