Patent ID: 7117492

Claim:
An exclusive access controlling apparatus for electronic information comprising: version number holding means for holding a version number of electronic information; electronic information name creating means for creating an electronic information name to be prepared by attaching the version number held in said version number holding means to an appellation unique to the electronic information; electronic information name distributing means for distributing the electronic information name created by said electronic information name creating means, to users of the electronic information; version number judging means for judging whether or not the version number included in said electronic information name coincides with the version number held in said version number holding means, when the electronic information to be specified by the electronic information name distributed by said electronic information name distributing means is subject to an access by each user of the electronic information; access permitting means for permitting an access to the electronic information, only when it is judged by said version number judging means that the two version numbers coincide with each other; and version number updating means for updating the version number held in said version number holding means, when the contents of the electronic information have been updated.