You can access Denodo from third-party SQL clients, SQuirreL SQL, DBVisualizer or SQL Workbench through JDBC. You will have to configure or add a Denodo Driver into the client to connect to the Denodo database. The denodo driver is located at <DENODO_HOME>/tools/client-drivers/jdbc
You will also need the class information which is com.denodo.vdp.jdbc.Driver and connection string syntax which is jdbc:vdb://<hostName>:<port>/<databaseName>
For more details, you can refer to this article
Hope this helps!