Here's a quick JDBC with HSQLDB tutorial to get you up and running with Java database connectivity and the popular HyperSQL database.

How to connect Java to a PostgreSQL database The steps required to connect a Java application to a PostgreSQL database follow the same pattern as other databases such as MySQL, SQLite and Microsoft's ...

Grafana is one of the most widely-used data visualization tools on the market. Learn how to connect Grafana to a remote MySQL database with this tutorial.