| 摘要 |
Only information that has reached a disclosure day among information registered in a database of a first information providing server (32) having access through an intranet (10) is downloaded to a second information providing server (42) having access through the Internet (20), and the information is provided to clients (22 to 26) that are provided with access rights and that are connected to the Internet (20) from the second information providing server (42). As a result, information that has not reached the disclosure day can be prevented from being leaked by an illegal access to the second information providing server (42). The establishment of access rights makes it possible to hierarchize clients (12 to 16, 22 to 26) connected to the intranet (10) and to the Internet (20).
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