DATA PROCESSING DEVICE, DATA PROCESSING METHOD AND DATA PROCESSING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a data processing device, a data processing method and a data processing program which can search for and update data easily even if the number of files constructing the data is small.SOLUTION: A data processing device 6 comprises a search information DB12 storing at least data constructed by hierarchical structure of plural data tables and an identification unit 9 determining top position of the data table for search. The search information DB12 stores the data table in a same system in an order from high-order class to low-order class. Each of plural data tables contains identification information to discriminate the data table of the low-order class uniquely, next column size and subordinate size. The identification unit determines a relative position to the top position of the data table for identification by adding subordinate size from the data table of the high-order class to the data table stored in a storage position just before the data table for identification.