You can now connect your Adobe Campaign Classic instance to your Vertica external database. This connection is managed through a new external account. read here in detail as to how to configure access to Vertica: Vertica FDA connector
In case you have any questions, please feel free to post them below or reach out through the community Q and A section.
In case you have any ideas and/or suggestions regarding the Campaign Classic product, then kindly submit them here.
Sukrity Wadhwa