If you are using either rails, express-mongoose, this is not supported (other than using smart collections)
If you are using forest-express-sequelize for your current agent, using tables from multiple databases is supported by the ORM, so it is somehow supported by forest admin.
this comes with limitations: you need to use smart relationships to create relations between tables that are not in the same DB which are very work intensive
If you are starting a new project, being able to mix datasources is one of the reasons why that pushed us to work on a full rewrite of how agents are designed.
This is currently in beta (not all features are covered, but will be soon enough)
Charts/Relationships between databases are natively supported and can be defined with one-liners
You can even mix and match different types of databases (SQL/Mongo only for now)
Thank you for your fast reply, really appreciate it!
We are on Nodejs, we have 3 apis with 3 databases and they’re all “connected” (same id references).
For a new integration involving many databases, the Romain third point is the way to go.
You will have good support since it’s the future we are building at Forest.