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The concept of multidimensional transformation of statistical databases is described. A given set of statistical output may be compatible with more than one statistical database. A transformed database D ' is a database which (1) differs from the original database D in its record content, but (2) produces, within certain limits, the same statistical output as the original database. For a transformable database D there are two options: One may physically transform D into a suitable database D ', or one may release only that output which will not permit the users to decide whether it comes from D or D '. The second way is, of course, the easier one. Basic structural requirements for transformable statistical databases are investigated. The closing section discusses advantages, drawbacks, and open questions.
Jan Schlörer (Sun,) studied this question.
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