If your Data Source is not listed in the Data Base type. Then Create ODBC connection in the BO server.
Ensure that you have installed the appropriate 32-Bit or 64-Bit DB drivers on the Business Intelligence Platform 4.0 machine.
Then Create ODBC system DSNs in 32 BIT ODBCS and 64 BIT ODBC.
below are the paths to access the both the ODBCs
1)C:\Windows\System32\odbcad32.exe - 64 Bit
2)C:\Windows\SysWOW64\odbcad32.exe - 32 bit
please go through the below URl to know how to create ODBC connections. Make sure that your selecting the proper drivers when you create ODBC.
create ODBC and make sure that your ODBC test is succeed. ODBC name should be same in 32 ODBC and 64 ODBC.
once the above steps are over..go to the Crystal report and update ODBC details