1. Shared:
  2. * UserDTO (data transfer object)
  3.  
  4. Application Server:
  5. * UserDAL (data access object)
  6. * UserBO (business object, contains UserDAL)
  7. * UserDTO (data transfer object as defined in shared lib)
  8.  
  9. Client:
  10. * UserDTO (data transfer object as defined in shared lib)