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\iteman{io-port 06110913}
\itemau{\'Sl{\eogonek}zak, Dominik; Synak, Piotr; Toppin, Graham; Wr\'oblewski, Jakub; Borkowski, Janusz}
\itemti{Rough SQL -- semantics and execution.}
\itemso{Greco, Salvatore (ed.) et al., Advances in computational intelligence. 14th international conference on information processing and management of uncertainty in knowledge-based systems, IPMU 2012, Catania, Italy, July 9--13, 2012. Proceedings, Part II. Berlin: Springer (ISBN 978-3-642-31714-9/pbk; 978-3-642-31715-6/ebook). Communications in Computer and Information Science 298, 570-579 (2012).}
\itemab
Summary: We introduce rough query, which is a new approach to defining and computing SQL approximations. Rough query results are reported by means of simple metadata of attributes in an information system that would be a result of a standard select statement. The proposed approach is already available as an SQL extension in both Infobright Community and Enterprise Editions. Rough queries are computed practically in real time by basing on the statistical information layer, which was used so far only for the standard query optimization.
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\itemli{doi:10.1007/978-3-642-31715-6\_60}
\end