Model that describes countries existing in the system.
| Name | Type | Description |
|---|---|---|
| alfa2 | String | Two-character country code, usually ISO 3166-1 alpha-2. |
| alfa3 | String | Three-character country code, usually ISO 3166-1 alpha-3. |
| code | String | Three-digit country code. |
| fullname | String | Full country name. |
| id | Int64 | Country ID. |
| last_update | Int64 | Record last update date as Unix time in seconds. |
| name | String | Country name. |