Based on the question, I believe you are asking if it is possible to create a southbound connection to Oracle Autonomous Data Warehouse in Denodo, if so, yes you can connect using the access mechanisms like [JDBC](https://docs.oracle.com/en/cloud/paas/event-hub-cloud/admin-guide/jdbc-connector-adwc.html) connection. For more information on creating data sources, you can refer to the section [JDBC sources](https://community.denodo.com/docs/html/browse/8.0/en//vdp/administration/creating_data_sources_and_base_views/jdbc_sources/jdbc_sources#jdbc-sources) of Virtual DataPort Administration Guide.
Regarding the Oracle Analytics Cloud, it seems that you are trying to connect to Denodo as a northbound connection, in that case you can establish an ODBC connection to Denodo from Oracle Analytics Cloud. In this case, you can set up similar security rules for access in Oracle Analytics Cloud as the PowerBI as, both are Data Visualization tools and falls under the same use case category.
Hope this helps!