| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a data structure and the like capable of ensuring robust data management and efficient operation without the need of complicated table designing and management even for data of no relation and managed by a plurality of systems.SOLUTION: A data structure includes: a universal table 43 for managing data collected from a plurality of ordinary systems 41 using different definitions by item IDs without defining item names; a mask table 45 storing therein mask information for each row unit for necessary item IDs that are minimum necessary item IDs for identifying the data from among the item IDs, the mask information being for enabling only the data stored in the necessary item IDs to be extracted; and a master table 46 for managing a plurality of extracted identical data as one data if the data is extracted from all the data in the universal table 43 according to the mask information stored for every row unit in the mask table 45 and the identical extracted data is extracted from a plurality of rows among the extracted data.</p> |
