Laravel Database Migrations The migration files
Example
Migrations in a Laravel 5 application live in the database/migrations directory. Their filenames conform to a particular format:
<year>_<month>_<day>_<hour><minute><second>_<name>.php
One migration file should represent a schema update to solve a particular problem. For example:
2016_07_21_134310_add_last_logged_in_to_users_table.php
Database migrations are kept in chronological order so that Laravel knows in which order to execute them. Laravel will always execute migrations from oldest to newest.
