Patent ID: 7676512

Claim:
A document management server that stores a plurality of files, comprising: a file storing section that stores files; a user information storage section that stores, for each of the files, user information defining relations between the file and users who are permitted to operate the file; a first setting section which sets first setting information defining that when a user operates a file, a first notification information notifying that the file is operated is transmitted to users excepting the user among users who are permitted to operate the file based on the user information stored in the user information storage section; a second setting section which sets second setting information defining a file and a user to whom second notification information notifying that the file is operated is transmitted; and a transmitting section that transmits the first and second notification information which indicates that a respective file was operate, based on the first and second setting information when a file is operated, wherein the first notification information has the same contents as the second notification information; and when a same user exists between users who are to be informed of the first notification information based on the first setting information and a user who is to be informed of the second notification information based on the second setting information, the transmitting section transmits either of the first notification information and the second notification information.