exec sp_addlinkedserver 'VitualNurse' , '' , 'SQLOLEDB' , '192.168.1.6';
exec sp_addlinkedsrvlogin 'VitualNurse' , 'false' , null , 'sa' , 'sa';
exec sp_dropserver 'VitualNurse' , 'droplogins';
select top 10 * from VitualNurse.VitualNurse.dbo.user_info;