amnesia data anonymization tool | amnesia is a flexible data anonymization tool that transforms relational and transactional databases to dataset where formal privacy guaranties hold. amnesia transforms original data to provide k-anonymity and km-anonymity: the original data are transformed by generalizing (i.e., replacing one value with a more abstract one) or suppressing values to achieve the statistical properties required by the anonymization guaranties. amnesia employs visualization tools and supportive mechanisms to allow non expert users to anonymize relational and object-relational data.