Country subdivisions ISO 3166-2 codes as MS Access
ISO 3166-2 is part of the ISO 3166 standard published by the International Organization for Standardization (ISO) and defines codes for identifying the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.
The purpose of ISO 3166-2 is to establish an international standard of short and unique alphanumeric codes to represent the relevant administrative divisions and dependent territories of all countries in a more convenient and less ambiguous form than their full names.
This standard is recommended by the Darwin Core standard to include the information in the CountryCode field and it is used in applications such as Elysia and Darwin Test, developed by GBIF.ES.