SQL Server Native Client (SNAC) is not supported beyond SQL Server 2012. Avoid using SNAC in new development work, and plan to modify applications that currently use it. The Microsoft ODBC Driver for SQL Server provides native connectivity from Windows to Microsoft SQL Server and Microsoft Azure SQL Database.
If the application does not specify a cursor name, the SQL Server Native Client ODBC driver generates one for the application upon cursor generation. The application can use SQLGetCursorName to retrieve the driver-defined cursor name for positioned UPDATE and DELETE statements. The application does not need to call SQLSetCursorName to take advantage of positioned data manipulation statements.