HOST file setup

In setting up the HOST file for naming resolution in a Windows2000 environment, is it necessary to include both the host name and the alias or just the alias?

e.g

#IP	              host name                        alias
127.0.0.1            mywindows.domain          
127.0.0.1            mywindows.domain          mydb.db

Thanks Received on Sun Jun 01 2003 - 18:34:23 CDT