Enhanced rough SQL for correlated subqueries
Marcin Kowalski, Dominik Ślȩzak, Piotr Synak · 2013
Abstract—We discuss some enhancements of approxi-mate SQL extensions available in Infobright’s database technology. We explain how these new enhancements can speed up execution of complex correlated sub-queries, which are quite popular in advanced database applications. We compare our research to the state-of-the-art solutions in the area of analytic databases. We also show in what sense our technology follows the principles of rough sets and granular computing.