External sorting is a technique used for sorting large amounts of data that cannot fit into the computer's main memory (RAM) at once. This is common in cases where datasets are larger than the available RAM, such as sorting files stored on disk, databases, or processing large data streams. ### Key Features and Concepts of External Sorting: 1. **External Storage**: External sorting typically involves data that resides on external storage devices, such as hard drives or SSDs, rather than being held in RAM.
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