State the purpose of the following files and give examples where each may be required in a school:
a) Back-up file.
b) Report file.

- Back-up-file: it is a file used for keeping a copy of the original data to act as an alternative source in case of damage/loss of original file. In a school it is required in the accounts department to back up financial details. In school examination office, it is required to back up present and past examination papers and report forms.
- Report file: it is used to prepare summary information for the school. It is required in
keeping inventories for the schools assets or school attendance.