I use ODBC adapter to connect Tableau with Denodo.
The steps which I followed,
1: Install the ODBC driver from the below path ,
2: Create a DSN on ODBC Data Source Administrator and configure it with Denodo VDP server.
3: Finally using the ODBC connection on Tableau I connected and was able generate the reports from my Denodo views.
I also want you to refer to the section "DEFINING THE ODBC CONNECTION" in the below link to create a DSN on your system to connect to Tableau.
Hope this helps!