If you want to connect from ERStudio to Denodo to get the Metadata, try to follow the KB article on setting up ODBC for connections to VDP:
If you want to import an ERStudio model to a Denodo database, you can use the [Denodo Model Bridge tool ](https://community.denodo.com/docs/html/document/denodoconnects/7.0/Denodo%20Model%20Bridge%20-%20User%20Manual)available in the Support Site.
In order to overcome “view pg_database not found” error, I would create a new mock view called pg_database in the Virtual DataPort as per the schema described in the [pg_database documentation](https://www.postgresql.org/docs/8.4/catalog-pg-database.html).
For example, you could execute the below statement in the VQL shell of the Virtual DataPort Administration Tool.
CREATE OR REPLACE VIEW pg_database as SELECT NULL AS datname, NULL AS datdba, NULL AS encoding, NULL AS datcollate ... FROM dual();
Hope this helps!