What does FIFO stand for in data processing?

FIFO stands for First-In/First-Out, which is a fundamental concept used in data processing and inventory management. This principle dictates that the items or data that are processed first will be the first ones to be removed or used in subsequent operations. In data processing, this means that the earliest data entries are handled before more recent entries, ensuring that data is dealt with in the order it was received.

This approach is essential for maintaining the integrity of data processing workflows, especially when dealing with queues where timing and order of operations are critical. For example, in a scenario where transactions are queued for processing, using FIFO ensures that the oldest transactions are processed first, reducing the chances of data backlog and improving overall efficiency.

The other choices do not accurately define the FIFO concept relevant to data processing. Hence, First-In/First-Out clearly stands out as the correct answer.