FILE EDITION MANAGEMENT SYSTEM, FILE REGISTRATION SERVER, FILE EDITION MANAGEMENT METHOD, AND PROGRAM

摘要

PPROBLEM TO BE SOLVED: To provide a file edition management system with a shortened download time. PSOLUTION: The file registration server 10 extracts, upon updating a file, a difference of the file of the latest edition from each of files of all past editions, and forms a differential file for each of the past editions. A file delivery server 11 receives and stores differential files formed by the file registration server 10. The file delivery server 11 transmits, upon receiving a download request stating a past edition owned by a client 13 from the client 13, transmits the differential file between the stated past edition and the latest edition to the client 13. PCOPYRIGHT: (C)2006,JPO&NCIPI