A content management system manages an original of electronic data content
and is capable of handling increases in the volume of electronic data and
maintains uniqueness of the original. Serial content management or
processing history is managed by an original management device, and
content data alone is archived on portable media with media IDs.
Therefore, increases in the volume of electronic data can be easily
handled, a history of updates to the original can be managed by the
system, and uniqueness of the original can be confirmed by the media IDs
because the medium-specific media IDs are treated as original data.