Drivers Used to connect database

  • Article

SQLOLEDB.dll - OLEDB Driver for  SQL
SQLSRV32.dll - ODBC Driver for SQL
MSDASQL.dll  - MSDASQL is an OLEDB provider for ODBC Drivers
MSDAORA.dll - Microsoft OLE DB provider for Oracle  (ODP .NET is Oracles .NET driver for Oracle)
msjet40.dll - Microsoft Jet Engine Library
MSorcl32.dll  - MSorcl32.dll is Microsoft ODBC driver for oracle

Note -  sqlcmd uses OLE DB while Query analyzer and osql uses ODBC ..