Abstract
Web information integrated management system require a powerful and versatile data model theat is able to represent a highly heterogeneous mix of data such as Web pages, XML, deep Web, files, etc. It requires access to both structured and unstructured data. Such collections of data have been referred to as dataspaces, and dataspace support platforms (DSSPs) were proposed to over several services over dataspaces, including search and query, source discovery and categorization, indexing and some forms of recovery. One of the key services of a DSSP is to provide seamless querying on the structured and unstructured data. In this paper, we present the web dataspaces data model (webDM) for Web information management. This model is able to represent all of the above data in a single, powerful yet simple data model. It can represent unstructured, semi-structured and structured data inside a single model. Moreover, it is support so-called intensional data. Using this model, users can query both structured and unstructured data in a single method.
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