The client connectivity component is an option in the Select Components dialog box in Setup. The client connectivity component is used to communicate between clients and servers, and includes the Microsoft Data Access Components (MDAC) and network libraries for DB-Library, ODBC, and OLE DB.
This component has no subcomponents. Client Connectivity is installed when the option for Connectivity Only is selected as an initial installation choice.
Note To connect to a named instance of SQL Server 2000, MDAC 2.6 must be installed on the client computer.