Question

Most modern transaction processing systems use ________ processing—a real-time method in which each transaction is processed as it is entered.

Answer 1

The answer to this is actually implied in the question: the type of transaction processing described is called real-time processing.

In real-time processing, transactions are processed immediately when it happens.

This is in contrast to another type of transaction processing called batch processing, where multiple transaction over a period of time are accumulated and then processed as one.