Is there option to directly update data in Oracle fusion tables based on customer database update

Summary:

In our solution, Oracle fusion CX is not customer master , we have another data base which will be customer master. Like to know is there any option or tool to directly update fusion database without API. we just want to replicate changes on realtime when changes happen in customer database.

Content (required):

In our solution, Oracle fusion CX is not customer master , we have another data base which will be customer master. Like to know is there any option or tool to directly update fusion database without API. we just want to replicate changes on realtime when changes happen in customer database.