Sql Server 2008 Native Client -

When SQL Server 2008 Native Client was released, it introduced several critical features that made it superior to the older "MDAC" (Microsoft Data Access Components) libraries:

For all its technical merit, SQLNCLI10 was a deployment nightmare. Unlike the bundled sqlsrv32.dll ODBC driver, the Native Client required a separate redistributable installer. Versioning was particularly painful: sql server 2008 native client