30. A local department store has a computerized record keeping system for
its inventory and charge accounts. "This system maintains an inventory
file of records of the inventory of each item stocked and a customer account
file of records of charges against each customer account. These files are

on magnetic tape. The input to the system is a punched card that contains
the following data:

Card columns Description
1-7 Customer account number
8-13 Item number
14-16 Ouantity sold
17-21 Dollar amount of sale (XXX4XX)
(20 pts) Using ANSI standard flow chart symbols, devise a system flow chart

for a system that uses the above cards to update both of these files,
and produce both an inventory status report and a customer status report.