| 摘要 |
According to an aspect of the present invention, information indicating the list of referrer documents referring to a referred document, is maintained. Thus, when the document identifier (name and directory location of the document) changes, the list of referrer documents that need to be changed can be easily identified. In an embodiment, the administrators of the referrer document are notified (e.g., by an automatic email) of the change of the document identifier of the referred document. According to another aspect of the present invention, a first mapping of the Uniform Resource Locator (URL) of each web accessible page/document to a virtual link is maintained in a web server. The content server maintains a second mapping of the virtual link to the document identifier. Thus, when the document identifier changes, only the second map in the content server needs to be updated for continued access of the content.
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