| 摘要 |
PROBLEM TO BE SOLVED: To provide a distributed database system configured to manage data management information on a different data store to be used in accessing data, to update a frequently accessed data record at an earlier timing, and to allow the latest data to be easily acquired.SOLUTION: A database system includes a distributed database having a plurality of nodes for storing data, and a data management device for managing the data stored in the nodes. The node includes: a data storage part that stores data associated with time stored by a time stamp and a key for identifying the data; a data update part for updating the data; a data transmission part for acquiring the data stored in the data storage part; and a data update facilitating part that issues a request to update the data to the data update part when the acquired data is not the latest data. |
