subroutine in seperate file, question

i want to keep a peice of code which uses CGI and DBIx module in a seperate file, and want to include it in all my scripts as follows:
 
require "/path/to/script/file";
 
I am not sure if the calling program is also using same modules CGI and DBIx what kind of unknown errors i might get? anyone know?
 
ty.
Rajeev

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