The only know to find out the compatible database for R&R Report Writer is to check the official description. In almost all cases, the developers choose to state this information.
For example, the R&R Report Writer application is compatible with Xbase (DBF) and SQL databases that are accessible via ODBC (Open Database Connectivity), such as Microsoft SQL Server, Oracle, and DB2. To find more information, I recommend you to visit the official website.
