Database Monitoring is a tool that provides deep visibility into databases across all hosts, enabling developers and database administrators to easily understand the health and performance of their databases and quickly troubleshoot any issues that arise. It delivers historical query performance metrics, explain plans, and host-level metrics in one place, allowing users to see the performance of normalized queries at a glance, troubleshoot slow queries with detailed explain plans, analyze historical trends in query performance, explore and visualize sampled queries, and detect infrastructure-level issues impacting their database. The tool currently supports MySQL 5.6+ and PostgreSQL 9.6+ databases, regardless of whether they're self-hosted or fully managed.