Data partitioning clusters individual entities of the population into a number of mutually exclusive subsets. Sande and Cox's work on the use of cell suppression methods for the Canadian census indicates that this method is computationally complex. The effectiveness of all these methods depends, of course, on the strictness of the security required. The authors discuss the approaches to security control mentioned in the previous paragraph in light of the different measures of disclosure. The paper brings some newer threats to the attention of SDB researchers.
Logical inference is a new problem arising from logic programming environments.
Earlier work concentrated on sum and count queries, but regression analyses present a whole new set of confidentiality problems. The Digital Library is published by the Association for Computing Machinery.