Research

• Security of Statistical Databases

Individual data collected in surveys and experiments is typically stored in  statistical databases, i.e., databases which provide only statistical information about groups of records with similar properties. Individual values kept in a statistical database  are very often confidential and so should be protected from disclosure. In particular, a statistical user who does not have access rights to individual records should be limited to statistical queries based on more than one individual. Moreover, no sequence of released queries should be sufficient to disclose confidential individual information.  The security problem for statistical databases is to provide a control mechanism which would allow sufficient amount of statistical analysis while protecting the confidentiality of individual records.