| 摘要 |
<p>PROBLEM TO BE SOLVED: To distinguish data influencing the version of an item itself from data not influencing, to manage data when there is a version change in the data related to the item. SOLUTION: Data is registered and managed for every item which is the substance of each hierarchy when expressing management objects by the configuration of many hierarchies. When the updating of the managed data is detected (S304), whether the updated data influence the history information of the items is determined (S303, S306). When the updated data are determined to influence the history information, the history information of the item to which the data belong is updated.</p> |
