I would like to be able to directly save all the collected data in a mysql database but I couldn’t find documentation about it

[Kal_Lam]

@metodologia, maybe this post discussed previously should help you get an idea of how it is done:

Send data transparently to our server

You can do this by setting up REST services. https://support.kobotoolbox.org/rest_services.html

And this one too …

Exporting data to Database

Also possible to use Kobo’s REST services and publish the data as JSON to an iPaaS (like OpenFn) which then converts the submissions to the desired format and loads them into your DB—we commonly integrate Kobo with DBs such as Postgres, MSSql, and MySql, each using a different adaptor on the platform.