EXEC sp_addlinkedserver

@server=N'LoginDB', -- Linked Server Display Name

@srvproduct=N'', -- Default to SQL Server

@provider=N'SQLNCLI', -- Use SQLNCLI

@datasrc=N'', -- host,port

@catalog=N'LoginDB';

EXEC sp_addlinkedsrvlogin

@rmtsrvname = N'LoginDB', -- Linked Server Display Name

@useself = N'false', -- Do not masquerade

@rmtuser = N'', -- Remote user name

@rmtpassword = N''; -- Remote user password

test query

select * from LoginDB

.LoginDB.dbo.Account WHERE MachineUID = '11111';