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Practical RDF Shelley Powers
Publisher: O'Reilly Media

But what if you're a lot more interested in Web 2.0, which is practical and real, than in the Semantic Web, about which opinions vary widely? The mashup examples use all of these, and they are very practical projects. And finally, a priority list of ways website owners can improve their Alexa rankings. Six-time Filipino world speed shooting champion Jethro Dionisio is back to his favorite .38 caliber pistol and is eager to get back his status as the top gun in the practical shooting scene. It is more practical to reduce the possibility of errors than to require developers to pay attention. Also, many people may be disappointed to learn that their college courses in philosophy might turn out to be of practical use. Why are Alexa rankings important? And the availability of several SPARQL query engines means that this exploration can be practical rather than theoretical. Leigh Dodds presents the first of a multipart tutorial on SPARQL, a query language for RDF and the Semantic Web, which may also play a role in Web 2.0 apps and services. Since RDF resources are typically large and written in technical and long terms, the eye-parsing scenario is not practical, and certainly hampers the whole utility of SPARQL. All white-hat SEO stuff and practical. I just came across D2RQ, a notation (plus implementation) for mapping relational databases to RDF, developed over the last four years by Chris Bizer, Richard Cyganiak and others at Freie Universität Berlin. With the March 2011 Virtuoso releases, we have taken a closer look at transactions with RDF. I helped TimBL refine Delta: an ontology for the distribution of differences between RDF graphs a bit, and there's working code in cwm. But I haven't really managed to use it in practical settings. While RDF is the most viable CRM representation, there are various low-level RDF issues that are not standardized. A couple of years ago, I started reading Shelley Powers' book, “Practical RDF” [1]. While there is potential to use more native datatypes, the practical issues of repeatable properties, blank nodes, etc mean that a 1:1 mapping isn't feasible.