What's the Reason? Making Queries with Jena RDQL
You've built the perfect ontology for your organization's knowledge base. You've encoded it in RDF based on standard vocabularies, so you can exchange data with other applications. And now you have a large amount of data encoded using this vocabulary. "But what can I do with all this data?" you think to yourself. "It's not like I can just use a query language like SQL!" Well, actually, you can—not specifically with the SQL language but with a similar structured language designed for querying knowledge bases. In this section, we'll use an RDF query language to retrieve information from an ...
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