| 摘要 |
The present invention provides a dimension table processing apparatus that efficiently derives a dimension hierarchy for a denormalized dimension table. The first information presenting means presents information on a plurality of fact tables included in a multidimensional database to an administrator as first information. The second information presenting means receives a fact table selected by the administrator from among the fact tables related to the first information, and presents information on dimension tables associated with the selected fact table in a star schema to the administrator as second information. The dimension hierarchy deriving means receives a dimension table selected by the administrator from among the dimension tables related to the second information as the one to be processed, calculates a predetermined evaluation value for each column in the dimension table to be processed based on data in each cell belonging to that column, and derives a dimension hierarchy of the columns, which consists of a plurality of hierarchical levels of the respective columns, based on the evaluation values thereof. The third information presenting means presents the dimension hierarchy for the dimension table to be processed derived by the dimension hierarchy deriving means to the administrator as third information. The approval receiving means receives a dimension hierarchy approved by the administrator based on the third information as an approved dimension hierarchy.
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