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What is     Data-mining-  In  data-mining , privacy preserving data-mining is the most innovative fields of research where the algorithms for data-mining are evaluated for the adverse effects occurred in privacy of data. The basic aspect in the privacy-preserving data-mining is dual. In first case, the private raw data such  as gender, identifiers, addresses, religion and something similar to these must be altered or removed from the actual database, as per the data receiver, which are not be capable to adjust the security of private data of other person. Whereas in the second case, the private data which may be retrieved from the database through using algorithms for data-mining must also be prohibited, as these patterns of information can be equally well compromise data privacy. To introduce various algorithms for altering the basic data in few fashion, this is the major target in the privacy-preserving data-mining is such that the private data and private-information are still r