The management of digital content has always been one of the major tasks of a data processing system. Even today, it is, however, a common method to store content in an unstructured way to local file systems and to retrieve it by explicit user interactions. If at all, users often impose structure to content a posteriori—in terms of file to folder matching, for example. However, in process of time, the types of content, its amount, and the way people want to use it have changed dramatically demanding for methods to enable more flexible management of content. For instance, the lack of such solutions promotes desktop search programmes like Google Desktop  or Windows Search , which have emerged to provide capabilities to search the contents of a user’s local computer files, rather than searching the Internet.
KeywordsContent Management Distribute Hash Table Voice Over Internet Protocol Business Collaboration Content Repository
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