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(1) Also referred to as data scrubbing, the act of detecting and removing and/or correcting a database’s dirty data (i.e., data that is incorrect, out-of-date, redundant, incomplete, or formatted incorrectly). The goal of data cleansing is not just to clean up the data in a database but also to bring consistency to different sets of data that have been merged from separate databases. Sophisticated software applications are available to clean a database’s data using algorithms, rules and look-up tables, a task that was once done manually and therefore still subject to human error.
(2) In a RAID system, the act of correcting parity bit errors so that drives remain synchronized.
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