Verification is performed to ensure that the data entered exactly matches the original source.

There are two main methods of verification:

  1. Double entry - entering the data twice and comparing the two copies. This effectively doubles the workload, and as most people are paid by the hour, it costs more too.
  2. Proofreading data - this method involves someone checking the data entered against the original document. This is also time-consuming and costly.
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