Access has some security but I wonder how secure it is? I also wonder
Not very secure. It only keeps honest people out.
where the .mdw file reside in the computer?
The best place is in the users profile, on an NTFS
volume, so that it is protected by Windows Security.
However, if you are using individual logins, with
passwords, and you want to centrally manage logins
and passwords, you may choose to have a shared MDW.
In which case, the best place to put it would be
in the same folder as the shared data. It can not
have the same name as a data file if it is in the
same folder: even though they have different extensions,
the file name MUST BE DIFFERENT if they are in the same
folder.
(david)