Improving automatic SQL translation for ROLAP tools.
Oscar Romero, Alberto Abelló · JISBD · 2005
In the last years, despite a vast amount of work have been devoted to modeling multidimensionality, multidimensional algebra translation to SQL have been overlooked. ROLAP tools automatically generate a cubequery according to the operations performed by the user. The SQL translation does not represent a problem when treating isolated operations but when mixing up together modifications brought about by a set of operations in the same cube-query, some conflicts could emerge depending on the operations involved. Therefore, if these problems are not detected and treated appropriately, the automatic translation can retrieve unexpected results. In this paper, we define and classify conflicts raised when automatically translating a multidimensional algebra to SQL, and analyze how to solve or minimize their impact.