| 摘要 |
PROBLEM TO BE SOLVED: To easily achieve access restriction based on the derived relation of a document. SOLUTION: This document operation part 200 operates a document with ID including management ID according to the instruction of a user, and generates a new document with ID including newly generated management ID, original management ID (master ID), the log information for its operation and document content after the operation, and sends it to a server. When receiving a branch instruction from the user in the operation, the document operation part 200 transmits the branch instruction to a server in association with the new document with the ID. When receiving the branch instruction along with the document with ID, the server generates a new document group for the document with ID, and makes the user set access right information for the group. When the operation to the document is instructed from the user, the server decides whether or not the user has access right to the group to which the document is belonging, and permits the operation when the user has the access right. COPYRIGHT: (C)2009,JPO&INPIT
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