An Integrity Check is a validation method primarily used to ensure that data stored in a database or in transit has not been corrupted or altered. This check can involve a software algorithm that computes a hash or checksum of the data. Upon retrieval, the hash or checksum is recalculated and compared to the original to detect any discrepancies. Integrity Checks are crucial in systems where data accuracy and reliability are paramount, such as in financial records, personal information storage, and cryptographic systems.