> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Countries

Download sample file: [Countries.csv](../assets/csv/Countries.csv)

This Countries file type is identified using the pattern: **\*\*Countries\*.csv** (as specified by `mr.common.file-patterns.countries`).
This file is loaded using the **Countries** topic. See the [Topic Aliases table](../dev/dev-mr-application/dev-dlc/dlc-mr-config#topic-aliases) for an understanding of the topic aliases associated with each topic.

For information on the glob patterns used and how to customize them, see note on [File name patterns](.#file-name-patterns)

<table><tr><th>Field</th><th>Key</th><th>Null</th><th>FieldType</th><th>Description</th><th>Example</th></tr><tr><td>AsOfDate</td><td>Y</td><td>N</td><td>String with format ‘YYYY-MM-DD’</td><td>Indicates the date of the file. See <a href=".">Note on AsOfDate</a>.</td><td /></tr><tr><td>CountryCode</td><td>Y</td><td>N</td><td>String</td><td>Unique three-letter country identifier code.</td><td>“GBR”, “FRA”</td></tr><tr><td>Region</td><td>N</td><td>Y</td><td>String</td><td>The region in which the country is located.</td><td /></tr><tr><td>SubRegion</td><td>N</td><td>Y</td><td>String</td><td>The sub-region in which the country is located.</td><td /></tr><tr><td>Country</td><td>N</td><td>Y</td><td>String</td><td>Name of the country.</td><td /></tr><tr><td>Latitude</td><td>N</td><td>Y</td><td>Double</td><td>The latitude of the country in the decimal degrees format.</td><td>“51.514451”</td></tr><tr><td>Longitude</td><td>N</td><td>Y</td><td>Double</td><td>The longitude of the country in the decimal degrees format.</td><td>“0.127723”</td></tr></table>