To easily manage a plurality of data whose generation order is continuous, and to improve the convenience of those data.

A management information generating part 272 generates management information for managing a file 251 to be recorded in an optical disk 268 by using data identification information supplied by a data identification information extracting part 264, and makes a management information storing part 273 store it, and supplies it to a multiplexing part 265 as necessary. The multiplexing part 265 multiplexes management information to be supplied by the management information generating part 272 with the file 251 to be supplied by the data identification information extracting part 264 as necessary, and supplies the result to a recording control part 266. The recording control part 266 controls a pickup part 267, and records the file 251 supplied by the multiplexing part 265 in the optical disk 268. This device may be applied to, for example, a recording device.