Using UML diagrams develop a Point of Sale (POS) that will be used to transact electronic money between purchasers and dealers. The POS should be able to: 1. Verify the pin of the Bob card holder; 2. Approve the transaction if there is sufficient funds in the account of the purchaser; 3. Output the following reports to separate files: monthly transactions (by item, transfers, customer) 4. Send alerts when the reorder levels of item are reached

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