Fetch Data from on premise Database, SQL, Oracle, or SAP for SPFx adaptive card Extension

I am trying to achieve. looking for is how to retrieve and store data on a database system deployed on-premise, such as an SQL server, Oracle Database, or SAP solution which 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 Leave Management solution that uses a local database let's say as an example an Oracle database. I am trying to connect the ACE card to that database to display the Leave information for an Employee in the card which will be added to the Viva connections Dashboard inside Microsoft Teams. And also the employee should be able to create new leave requests through the ACE card from Viva Connections inside Microsoft Teams.