DATA MANAGEMENT DEVICE, DATA MANAGEMENT METHOD, AND DATA MANAGEMENT PROGRAM

摘要

A data storage unit (111) stores external table operation rules (130) defining operations that can be performed in an external database (150). A search criteria reception unit (1031) receives search criteria (301). If the search criteria (301) specify both that the external database (150) should be searched for data, and that an operation should be performed using the searched-for data, then a query statement generation unit (105) determines whether the operation specified by the search criteria (301) can be performed in the external database (150), on the basis of the external table operation rules (130), and if the operation can be performed in the external database (150), the query statement generation unit (105) generates an extended query statement, which is a query statement instructing the external database (150) to perform the search and the operation specified by the search criteria (301). A query execution unit (1032) transmits the extended query statement to the external database (150).