| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To facilitate retrieval of information about an operation on an electronic document in an old version. <P>SOLUTION: A document registration part 130, which receives a document as an operation result and its management ID, a master ID as a management ID of the document before the operation, a type of the operation, and a time of the operation from a client, registers the master ID, the type of the operation, and the time of the operation respectively in a derivation relationship DB 110 in association with the management ID of the document. A registration restriction determination part 132 determines whether a document shown by the master ID corresponds to an ancestor of the latest version document associated with the latest revision operation or not among documents included in a tree structure, to which documents shown by the master ID of the documents received by the document registration part 130 belong, among tree structures shown by derivation relationship groups registered in the derivation relationship DB 110. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
