| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten a time to be spent on duplicated data exclusion between a reference file system and an object file system. Ž<P>SOLUTION: A direct identifier as a unique identifier to be determined for indicating the aspect of a directory is generated for every directory included in a reference system and an object file system, and the directory identifier of the directory in the reference file system is compared with the directory identifier of the directory in the object file system, and a file identifier for identifying each file is generated for every file included in the reference file system and the object file system based on the comparison result, and the file identifiers are compared, and the file data of the mutual files whose file identifiers are matched are compared, and the duplication of the data is eliminated based on the comparison result. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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