When a computer program "reads" a record from a database, it actually retrieves a group or block (or page.) of records at a time. This approach minimizes the number of actual disk accesses.

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Quizplus · Accepted Answer

This is true because reading data in blocks or pages reduces the number of disk accesses, which is more efficient than reading one record at a time due to the high latency of disk operations.

When a Computer Program "Reads" a Record from a Database