Method related to structured metadata

摘要

A first unit includes a first metadata store portion and a connection destination information store portion. The first metadata store portion contains first structured metadata. The connection destination information store portion contains connection position information and reference information. The connection position information represents a connection point in the first structured metadata to which second structured metadata should be connected. The reference information relates to the second structured metadata and includes information relating to a place where the second structured metadata exist. A second unit includes a second metadata store portion containing the second structured metadata. The first structured metadata and the second structured metadata are integrated into third structured metadata of a tree structure in response to the connection position information and the reference information contained in the connection destination information store portion of the first unit.