Utilize este identificador para referenciar este registo: http://hdl.handle.net/10451/14009
Título: Versus: a Web Data Repository with Time Support
Autor: Campos, João P.
Orientador: Silva, Mário Jorge Costa Gaspar da
Palavras-chave: Information repository
Version management
Web warehousing
Distributed computing
Data de Defesa: Mai-2003
Editora: Department of Informatics, University of Lisbon
Relatório da Série N.º: di-fcul-tr-03-8
Resumo: Web repositories are large scale warehouses of data downloaded from the Web, needed by applications that summarize that data to produce results that help people use information. Time is a central dimension in Web data, because the Web is continuously changing and it is impossible to get a snapshot of a large portion of the Web instantaneously. Developers of applications that manage Web data usually distribute the operations performed by their applications over several processing nodes, to scale-up to the amount of data that may be processed. Versus is a model for a repository providing time oriented distributed Web data management. Time is managed by versioning the objects saved in the repository. Distribution is managed by using a hierarchy of workspaces. Distributed threads work on data stored in the lower level workspaces, and save it by checking-in that data into the workspace in the next upper level. Versus applications can specify the granularity of the distribution and the conflict resolution policies they want to implement. This allows a great control over the repository, increasing the number and type of applications it is suitable to support. The Versus model was embodied in a prototype that is being used to build applications for managing data collected from the Web
URI: http://hdl.handle.net/10451/14009
Aparece nas colecções:FC-DI - Master Thesis (dissertation)

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