In a computer based information system, state the purpose of the following files and give one example where such a file may re required in a school
(a) In a computer based information system, state the purpose of the following files and give one example where such a file may re required in a school (8mks)
(i) Report life
A summary file from the main file
(ii) Backup file
Backup also called a security file – are copies of files kept in case the original master file is damaged or lost and cannot be used.
(iii) Reference file
This is a file with a reasonable amount of permanency. Examples of data used for reference purposes are price list, tables of rate of pay, names and addresses.
(iv) Sort file
This is a temporary file that holds records organized in a particular order
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