DNS: Two domains, Same server?

[Hole, Ashley]

Hi , 

We are wanting to run a second domain on a specific name server and I have a
couple of questions: 

I know that we have to add the new primary into the named.boot file, but how
does that effect the db files when we do the hosts_to_named translations if
it is for the same network.

example, if I do: 

hosts_to_named -d domaina -n 150.150 -- the db.150.150 and db.domaina will
be produced   - Correct??? 

and then 

hosts_to_named -d domainb -n 150.150 -- does the db.150.150 get overwritten
and only domainb will do the address translations? 

I guess what I am asking is:  Is there a way to alias domaina with domainb.

 Any insight would be much appreciated