Exclusive access controlling apparatus, exclusive access controlling method and recording medium recorded with exclusive access controlling program, for electronic information

An exclusive access controlling method for electronic information, comprising:

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

A recording medium recorded with an exclusive access controlling program for electronic information for performing a process comprising:

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

An exclusive access controlling method comprising:

• creating an electronic information name;
• attaching a version number to the electronic information name;
• holding the version number in a table;
• distributing the electronic information name to users of the electronic information;
• judging whether or not the version included in the electronic information name coincides with the version number held in the table when the electronic information distributed by said distributing is subject to an access by each user of the electronic information;
• permitting access to the electronic information only when it is judged that the two version numbers coincide;
• and
• updating the version number held in the table, when the contents of the electronic information have been updated.