What is the file format for a data upgrade script?

[dmitrii_fediuk]

• {$module}-v2.php
• install-data-v2-{$module}.php
• upgrade-0.0.2.php
• data-upgrade-0.0.1-0.0.2.php

inchoo.net/magento/magento-install-install-upgrade-data-and-data-upgrade-scripts