Objective 1.3: Implement transactions
Once upon a time, flat indexed sequential access method (ISAM) databases ruled the world, and transactions weren’t a big deal and were seldom even a concern on most developers’ minds. Today, with e-commerce booming and even traditional commerce being largely computerized, the need for transactions shows itself frequently in applications (and this should in no way imply that transactions are only relevant to commerce).
Transactions are powerful and, when used correctly, provide tremendous functionality commensurate to the effort it takes to use them. At the same time, transactions are not free in terms of resource utilization, and incorrect implementations have been the source of countless headaches for database ...
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