Abstract
I forestall the information that the management side demands, and a correct, appropriate extracting method, skill to show it, and to process into is necessary. However, by the education of the cost accounting, I give counted data beforehand and the calculation practice of the type to sell an answer by processing it is mainstream and it has been gathered and does not teach the derivation method of data. The derivation of the data which have been gathered generates DB schema, and a skill to make trial and error by dimension deletion is necessary. Therefore I consider the structure which assists the trial and error of the person by performing a part generating DB schema in machine learning using the genetic algorithm.