Fetch Data from on premise Database, SAP HANA Cloud for SPFx adaptive card Extension

I am trying to achieve. looking for how to retrieve and store data on a database system deployed on-premise, such as an SAP HANA solution that has its own database through the custom Viva Connections ACE(Adaptive Card Extension)  card which I am trying to create. To give you an idea an example a customer has a locally deployed payroll Management solution that uses a local database. I am trying to connect the ACE card to that database to display the payroll information for an Employee in the card which will be added to the Viva connections Dashboard inside Microsoft Teams.