Composer, Yii2: How to start script execution during installation?

Question

Yii

Composer puts the module to Yii2
Upon completion of the installer, the information is automatically written to the database table, they say I'm installed, ready for activation on the site.
Two questions, how to tell the composer - execute the command, how to work with the database from the composer?

Answer 1

https://getcomposer.org/doc/articles/scripts.md
post-install-cmd
And write what you want there, you can write a python script and execute it, or in php.
How to work with the database, the question itself disappears from the above.