INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM

摘要

It is possible to effectively register/search a data set correlated to an identifier which is hierarchically expressed and a child/grandchild data set correlated to a lower-node identifier of the identifier.  A pair of an identifier and data is inputted to an information processing device (500) corresponding to the identifier.  An identifier data storage unit (501) stores a record containing an identifier, a data set as a data group correlated to the identifier, a child/grandchild data set as a union of data sets correlated to the respective identifiers which is are hierarchically lower than the aforementioned identifier.  A data registration/processing unit (502) inserts the inputted data into a data set of the record having an identifier which coincides with any one of the records stored in the identifier data storage unit and inserts the inputted data into a child/grandchild data set of the record having an identifier which is hierarchically higher than the aforementioned inputted identifier.