Data management system, data management method, and program recording medium

A data management method comprising:

• outputting to a network, by each of a plurality of controllers, control data updated by a data updating circuitry to update control data that are data necessary for controlling a circuitry to be controlled, and data related information that is information on the updated control data and includes at least date-and-time information that is information on a date and time when the control data are updated;
• and
• acquiring, by the data management circuitry, the control data and the data related information output from each of the controllers from the network, and accumulating the control data and the data related information in association with each other in a management circuitry storage;
• receiving user operation for specifying update history identification information that is information for identifying history of updating the control data;
• and
• updating, by the data management circuitry, the control data to be used in controlling a circuitry to be controlled by the controllers that do not include a control circuitry storage to store the data related information and the control data updated by the data updating circuitry on the basis of the update history identification information specified by the user operation and the control data stored in the management circuitry storage for the controllers that do not include a controller storage.

A computer program product comprising a non-transitory computer usable medium having a computer readable data management program causing the computer to execute:

• a process of acquiring, from a network, updated control data output by each of a plurality of controllers to the network when control data that are data necessary for controlling a circuitry to be controlled are updated by a data updating circuitry, and data related information that is information relating to the updated control data and includes at least date-and-time information that is information on a date and time when the control data are updated, and accumulating the updated control data and the data related information in association with each other in a management circuitry storage;
• a process of receiving user operation for specifying update history identification information that is information for identifying history of updating the control data;
• and
• a process of updating the control data to be used in controlling the circuitry to be controlled by the controllers that do not include a controller storage to store the data related information and the control data updated by the data updating circuitry on the basis of the update history identification information specified by the user operation and the control data stored in the management circuitry storage for the controllers that do not include a controller storage.