[dba-SQLServer]SQL2000 Security - Preventing access

We are in the process of completing a new installation.  We have created a 
runtime WXP ADP with a SQL2000 BE.  We have set security so that users that 
log onto the program can only access the parts that are relevant to 
them.  Fine so far.

What I haven't worked out yet is - What happens if someone gets hold 
of  the SQL database file (say for example from a backup tape), takes it 
home and attaches it to their own copy of SQL.  Is there any way to prevent 
them from being able to access the data or objects?


Regards

David Emerson
DALYN Software Ltd
25b Cunliffe St, Johnsonville
Wellington, New Zealand
Ph/Fax (877) 456-1205