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Federated Naming Service Programming Guide

Identifiers

Identifiers are used to identify reference types and address types in the reference and to identify attributes and their syntax in the attribute operations.

The FN_identifier_t type is used to represent an identifier. It consists of an unsigned integer, which determines the format of identifier, and the actual identifier, which is expressed as a sequence of octets.

XFN defines a small number of standard forms for identifiers, as shown in Table 2-4.

Table 2-4 XFN Identifier Formats

Identifier Format  

Description 

FN_ID_STRING

The identifier is an ASCII string (ISO 646).  

FN_ID_DCE_UUID

The identifier is an OSF DCE UUID in string representation. See the X/Open DCE RPC (ISBN 1-872630-95-2). 

FN_ID_ISO_OID_STRING

The identifier is an ISO OID in ASN.1 dot-separated integer list string format. See the ISO ASN.1 (ISO 8824).