Migrations files ################ Each application as well as the local folder can have a `migrations` folder. This folder contains migrations files that are a convenient way to update the database or files. The `FuelPHP migration system `__ is used. However on Novius OS there are two things you should know: * Application migration files must be on the namespace `{{APPLICATION_NAMESPACE}}\\Migrations` * Whenever it is possible, sql update must be on a separate file (in order to make easier manual updates). As most of the time only sql requests are executed, a migration class has been implemented in order to ease migrations. You can take a look at the :ref:`API documentation `. When an application is installed or updated, migration files are executed (if they haven't been already) through the application manager.