# Design

The Country Module introduces the following concepts:

## Organization

The Organization represents an international organization of Countries <model-country.country>.

See also

Organizations can be found under the main menu entry:

> Administration ‣ Countries ‣ Organizations

## Region

The Region represents a geographical region that groups Countries <model-country.country>. The main usage is for reporting and statistics.

The UN M49 methodology and codes are used when Loading and updating countries and subdivisions.

See also

Regions can be found under the main menu entry:

> Administration ‣ Countries ‣ Regions

## Country

This is the top level concept provided by the Country Module. Each country record in Tryton represents a specific country, political state or nation.

The ISO 3166 standard defines the codes and names of countries and is used when Loading and updating countries and subdivisions.

See also

Countries can be found under the main menu entry:

> Administration ‣ Countries ‣ Countries

## Subdivision

The Subdivision of a Country <model-country.country> represents a well defined area of that country. Subdivisions can be any size, ranging from regions, provinces, states, and counties down to municipalities, cities and boroughs.

The ISO 3166-2 standard defines codes and names for country subdivisions. These are automatically loaded and updated along with the countries.

## Postal Code

The Postal Code concept is used to store postal codes, and their relationship to Countries <model-country.country>, Subdivisions <model-country.subdivision> and cities. Depending on the country they relate to these codes are known locally as either postcodes, post codes, PIN or ZIP codes.

A script is provided for loading and updating postal codes.