After the linux (DEB or RPM) driver is installed, a DSN with the name DEVART_QUESTDB is created. You can use it to test the connection with the QUESTDB server. For this, perform the following steps:
User ID=<your QUESTDB User Name>
Password=<your QUESTDB password>
Server=<your QUESTDB server address>
Port=<your QUESTDB Port>
isql -v DEVART_QUESTDB