Whats is grafana exactly for?

I have read :
The analytics platform for all your metrics

Grafana allows you to query, visualize, alert on and understand your metrics no matter where they are stored. Create, explore, and share dashboards with your team and foster a data driven culture.

Used by thousands of companies to monitor everything from infrastructure, applications, and power plants to beehives.

Grafana is the open source analytics and monitoring solution for every database

Can you help me ?
Is able to read any database ?
Is a Statistical software ?

Best Regards