Issue: 

The SDK documentation example gives JDBC as a type, but I get the following error:  E UserLib::doConnect - Connection type 'jdbc' is unknown for this product version.  E IEngine_ConnectCppExceptions - API failure: function = IEngine_Connect, code = 1203

Solution: 

IDKit PC SDK does not contain JDBC/ODBC database connectivity. It is exclusively feature of IDKit PRO SDK. For more information see chapter "Product Differences" in IDKit SDK documentation .