Hi Andres,
you are using a non-certified database type, so you are not guaranteed the connection will work properly.
See DB pre-requirements here:
https://www.appeon.com/support/documents/appeon_online_help/pb2017/installation_guide_for_powerserver_pb_edition/ch02s04.html
This said, since you are using PowerServer .NET, you can only try if, by pure chance, the ODBC connection works (certified DB would let you use native drivers instead).
Best,
Marco
P.S.
I would rather try to migrate Ingres to a supported RDBMS.
my question was about ingress not a full supported database
DB interfaces on runtime packager and Other components, maybe you can use connect direct interface (DIR) open client is required.