For databases without native Zynty support, ingest metrics from an existing Prometheus-format exporter instead.
Most exporters serve metrics on their own HTTP port, separate from the database itself.
curl http://db-host:9187/metrics | head -20
Point Zynty at the exporter's metrics endpoint. Zynty scrapes it on the same interval as your other polled devices.
Select which exported metric names should populate the database's dashboard KPIs and which should feed alert rules, you don't need to bring in everything the exporter reports.