To provide a data management device and the like allowing diverse file retrieval using related information except a file name, and allowing short-time retrieval even if the number of files becomes large.
A waveform measurement device 1 includes a file system 32 as this data management device managing data recorded in a hard disk 22 as a file. The file system 32 includes: a recording part 32a creating index information including the related information and the file name of the data to be recorded, adding the index information to the data, and recording them; a database creation part 32b creating a database DB wherein addition information and position information indicating a recording position of the data recorded in the hard disk 22 are associated; and a management part 32c acquiring the position information of the data recorded in the hard disk 22 from the database DB based on at least one of the related information and the file name of the file to be managed, and managing the data.
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Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama