A database service is more than just monitoring if a main process of the database is running. This gives no information at all about the functionality and response times of the databases.
The tool SQL-IMS was created, which depicts these functionalities decoded for MS-SQL database and render them graphically. Based on PRTG and various sensors and metrics monitoring can be implemented on standard baseline, for databases like MS-SQL, Oracle, MySQL,...
So you can rely on your backend
DEPENDING ON IMPORTANCE AND SLA'S TO A SYSTEM, ONE CAN CHOOSE BETWEEN ONE
STANDARD, PREMIUM OR PREMIUM+ SERVICE.