# Datenbank-Backend

ngSurvey kann mit jeder der folgenden Datenbanken als Backend betrieben werden. 

* [Microsoft SQL Server](/de/installation-setup/installation/datenbank-backend/microsoft-sql-server.md)
* [MySQL](/de/installation-setup/installation/datenbank-backend/oracle-mysql.md)
* [MariaDB](/de/installation-setup/installation/datenbank-backend/mariadb.md)
* [PostgreSQL](/de/installation-setup/installation/datenbank-backend/postgresql.md)

{% hint style="danger" %}
Sobald eingerichtet, ist es derzeit nicht möglich, eine bestehende ngSurvey-Datenbank von einem Datenbankanbieter auf einen anderen zu migrieren.
{% endhint %}


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