Does The Semantic Web Require Me To Manually Markup All The Existing Web-pages, Or To Convert All The Data In Relational Databases Into RDF
he Semantic Web is about a web of data. The data itself can reside in databases, spreadsheets, Wiki pages, or indeed traditional web pages. The challenge is to develop tools that can export these data into RDF form: RDF plays the role of a common model, as a kind of a glue to integrate the data. That does not mean that the data must be physically converted into RDF form and stored in, say, RDF/XML. Instead, automatic procedures, for example SQL to RDF converters for relational databases, GRDDL processors for XHTML files with microformats, RDFa, etc, can produce RDF data on-the-fly as an answer to, eg, queries.
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