2.5.21.5 - Attribute Types

OID value: 2.5.21.5

OID description:
The attributeTypes operational attribute specifies the attribute types used within a subschema.

The attributeTypes operational attribute is multi-valued; each value describes one matching rule.

attributeTypes ATTRIBUTE ::= {
	WITH SYNTAX AttributeTypeDescription
	EQUALITY MATCHING RULE objectIdentifierFirstComponentMatch
	USAGE directoryOperation
	ID id-soa-attributeTypes 
}

AttributeTypeDescription ::= SEQUENCE {
	identifier	ATTRIBUTE.&id,
	name		SET OF DirectoryString { ub-schema } OPTIONAL,
	description	DirectoryString { ub-schema } OPTIONAL,
	obsolete	BOOLEAN DEFAULT TRUE,
	information	[0] AttributeTypeInformation
}

AttributeTypeInformation ::= SEQUENCE {
	derivation [0] ATTRIBUTE.&id OPTIONAL,
	equalityMatch [1] MATCHING-RULE.&id OPTIONAL,
	orderingMatch [2] MATCHING-RULE.&id OPTIONAL,
	substringsMatch [3] MATCHING-RULE.&id OPTIONAL,
	attributeSyntax [4] DirectoryString { ub-schema } OPTIONAL,
	multi-valued [5] BOOLEAN DEFAUTL TRUE,
	collective [6] BOOLEAN DEFAULT FALSE,
	userModifiable [7] BOOLEAN DEFAULT TRUE,
	application AttributeUsgae OPTIONAL
}

See also the OID Repository website reference for 2.5.21.5

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