Why This Chapter Is Important
Transaction processing refers to the grouping of a series of changes into a single batch. The entire batch of changes is either accepted or rejected as a group. One of the most common implementations of transaction processing is a bank automated teller machine (ATM) transaction. Imagine that you go to the ATM to deposit your paycheck. In the middle of processing, a power outage occurs. Unfortunately, the bank recorded the incoming funds before the outage, but the funds had not yet been credited to your account when the power outage occurred. You would not be very pleased with the outcome of this situation. Transaction processing would prevent this scenario from occurring. With transaction processing, the whole process ...
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