docs/user_guide/connecting/greengage.md
GreengageDB is PostgreSQL-compatible (it speaks the PostgreSQL wire protocol), so the basics — host, port, database, user, password, SSL, and SSH tunneling — work the same way as a Postgres connection.
To learn more about GreengageDB and how to set up your environment (including Docker), see the official documentation:
Beekeeper Studio supports both GreengageDB 6 and GreengageDB 7.
GreengageDB 6 is based on an older PostgreSQL version, so some newer PostgreSQL features are not available.
Known example:
GreengageDB 7 is generally recommended when you have a choice.