Hi Virginie,
If you want to replicate the tables from one database to another you should try the "Replicator Rdbms" template, that allows you to replicate schemas or particular tables with their data.
A priori MariaDB is based on MySQL so the standard metadata and templates that support MySQL should work for MariaDB as well. If you encounter any MariaDB specific problem do not hesitate to send it to the Stambia support team so we can see it, propose a solution and in case it is necessarry develop a specific metadata/template.
Regards,
Adrian MATYSIAK