| 摘要 |
The present invention provides a document data sharing system including a user apparatus that transmits and receives e-mail and a server apparatus that hierarchizes and registers different versions of document data and provides the document data to the user apparatus, wherein the user apparatus includes a transmitting unit that, when registering document data attached to a received e-mail in the server apparatus, generates a list of identification information of one or more past e-mails related to the e-mail and transmitting a registration request including the list to the server apparatus, and the server apparatus includes a registration unit that determines a version of document data to be registered indicated by the registration request based on the identification information in the list included in the registration request received from the user apparatus and registers the document data in a corresponding hierarchical position. |
