Exploring Transactions
Transactions are the building blocks of processing in applications, and almost any operation an application performs can be considered a transaction. What makes transactions valuable is the capability to group a series of operations into a single unit of work. Loosely speaking, a transaction is a sequence of actions and operations that act as a single unit of work to transform the system from one consistent state to another consistent state.
Business rules within a system define which actions must be grouped together into a transaction. Can you think of some situations in the banking application in which you would want to perform a series of operations in a single unit of work? Table 7.1 lists some of these situations and ...
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