RDF
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Note: XML Prague is also a very interesting pre-conference day, a traditional dinner, posters, sponsors announcements, meals, coffee breaks, discussions and walks that I have not covered in article for lack of time. When I was a child, I used to say that I was feeling Dutch when I was in France and French when I was in the Netherlands. That was nice to feel slightly different and I liked to analyze the differences between Dutch people who seemed to be more adult and civilized and French people who seemed to me more spontaneous and fierce. I have found back this old feeling of being torn between two different culture very strongly this week end at XML Prague.
Web Sémantique:RDF
RDF - Semantic Web Standards
RDF is a standard model for data interchange on the Web. RDF has features that facilitate data merging even if the underlying schemas differ, and it specifically supports the evolution of schemas over time without requiring all the data consumers to be changed. RDF extends the linking structure of the Web to use URIs to name the relationship between things as well as the two ends of the link (this is usually referred to as a “triple”). Using this simple model, it allows structured and semi-structured data to be mixed, exposed, and shared across different applications. This linking structure forms a directed, labeled graph, where the edges represent the named link between two resources, represented by the graph nodes. This graph view is the easiest possible mental model for RDF and is often used in easy-to-understand visual explanations.
Next: Semantic Modeling If the graph data model is the model the semantic web uses to store data, RDF is the format in which it is written. In the first lesson, we looked at graph data and introduced RDF.