Business, 21.11.2019 20:31 xaiverrodriguez

Whitlock department stores runs a multiuser dbms. unfortunately, at thepresent time, the dbms does not enforce concurrency control. one whitlock customer had abalance due of $500.00 when the following three transactions related to this customer wereprocessed at about the same time: payment of $500.00purchase on credit of $100.00merchandise return (credit) of $50.00each of the three transactions read the customer record when the balance was $500.00 (ie, before any of the other transactions were completed).the updated customer record was returnedto the database in the order shown in the bulleted list above. a. what balance will be included for the customer after the last transaction was completed? b. what balance should be included for the customer after the three transactions have been processed?

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Whitlock department stores runs a multiuser dbms. unfortunately, at thepresent time, the dbms does n...