If you want to federate multiple database instances and inject data from all of them into single dashboard, there are only 2 solutions:
• Use GoodData platform. Setup a ETL to transfer data from all your database into a single datamart running on our side.
• Use
GoodData.CN/GoodData cloud running directly on top of your databases. You would have to spin-up a federation technology like Apache Drill/Dremio to federate all your data sources. Then GoodData would integrate with Drill/Dremio and could inject data from all your databases into a single dashboard