Both types of client can connect to both types of server. SQL Server 6.0 clients can connect to SQL Server 6.0 and 4.2 servers, and SQL Server 4.2 clients can connect to SQL Server 6.0 and 4.2 servers.
To a SQL Server 4.2 server, a SQL Server 6.0 client appears to be a 4.2 client. To a SQL Server 6.0 server, a SQL Server 4.2 client appears and behaves as a SQL Server 4.2 client. A SQL Server 4.2 client does not support new SQL Server 6.0 features. For example, the decimal datatype is converted to float. For more information, see Support for New Features, later in this appendix.
SQL Server 6.0 and SQL Server 4.2 servers may be set up as remote servers to each other. Server-to-Server RPC operates normally between SQL Server 6.0 and SQL Server 4.2 servers.
ODBC connections between 6.0 and 4.2 function normally.