ISO/IEC 15897:2011

Overview

ISO/IEC 15897:2011 - "Information technology - User interfaces - Procedures for the registration of cultural elements" defines a formal registry and the procedures for recording cultural conventions used in information technology. The standard covers both free-form Narrative Cultural Specifications and machine-parsable specifications (for example, POSIX Locales, POSIX Charmaps, Repertoiremaps, and FDCC-sets) and supports formats such as SGML and XML. Registered entries receive unique numeric and token identifiers and the International Register is published in electronic (Internet) and optionally printed form.

Key Topics and Requirements

• Scope of registration
  • Narrative Cultural Specifications, Repertoiremaps, POSIX Locales and Charmaps, FDCC-sets, and other machine-processable formats following ISO/IEC TR 14652 recommendations.
• Registry content and format
  • The International Register (ISO-IR-15897) holds registrations and indices; available electronically and may be free-of-charge on the Internet.
• Identification
  • Each cultural specification is assigned a numeric identifier and a token identifier for unique identification and use in software.
• Governance and procedures
  • Roles and responsibilities defined for the ISO/IEC supervisory body, Registration Authority, Sponsoring Authority, and Joint Advisory Committee.
  • Procedures for initial registration, processing approved applications, appeals, revisions, additions, and withdrawal of registrations.
• Formats and rules
  • Formats for Narrative Cultural Specifications and Repertoiremaps; rules for token identifiers and registration metadata.
• Interoperability considerations
  • Intended use with POSIX Locale handling, programming languages, database handling, and communication protocols.

Practical Applications

• Localization and internationalization teams use ISO/IEC 15897:2011 to find or register standardized cultural conventions (date/time, numeric formats, collation, character repertoires).
• Software developers and OS vendors (especially POSIX-conformant systems) can adopt registered POSIX Locales and Charmaps directly for runtime locale behavior.
• System integrators, procurement officers, and standards bodies use the registry as a reference to ensure consistent cultural behavior across products and services.
• Database and communication protocol designers use token and numeric identifiers for unambiguous identification of locale-related resources.

Related Standards

• ISO/IEC/IEEE 9945 (POSIX Base Specifications)
• ISO/IEC TR 14652 (FDCC-sets, Charmaps, Repertoiremaps)
• ISO 639 (language codes), ISO 3166 (country codes), ISO 8601 (date/time), ISO/IEC 10646 (UCS)
• ISO/IEC 8824/8825 (ASN.1)

ISO/IEC 15897:2011 is a practical reference for anyone implementing or standardizing locale, character mapping, and other cultural conventions across international IT systems.