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Definition
A statistical database (SDB) system is a database system that enables its users to retrieve only aggregate statistics (e.g., sample mean and count) for a subset of the entities represented in the database.
Background
As a statistical database may contain sensitive individual information, such as salary and health records, generally, users are only allowed to retrieve aggregate statistics for a subset of the entities represented in the databases. Common aggregate query operators in SQL include SUM, COUNT, MAX, MIN, and AVERAGE, though more sophisticated statistical measures may also be supported by some database systems.
Statistical databases pose unique security concerns, which have been the focus of much research. However, the key security challenge is that of ensuring that no user is able to infer private information with respect to a privacy...
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Adam, N., Lu, H., Vaidya, J., Shafiq, B. (2011). Statistical Databases. In: van Tilborg, H.C.A., Jajodia, S. (eds) Encyclopedia of Cryptography and Security. Springer, Boston, MA. https://doi.org/10.1007/978-1-4419-5906-5_767
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