We would like to know how to add a new ANSI supported SQL DB as a datasource in Demio through a plugin and query them through JDBC / ODBC. Similar to how Presto supports jdbc based plugin that can be used to connect to any ANSI SQL supported DB as a source.
Currently, Dremio does not support the ability to add your own data sources. It is in our roadmap to provide a data source SDK to make your own connectors sometime in the future.