Twenty-five Semantic Web and Database researchers met at the 2011 STI Semantic Summit in Riga, Latvia July 6-8, 2011 to discuss the opportunities and challenges posed by Big Data for the Semantic Web, Semantic Technologies, and Database communities. The unanimous conclusion was that the greatest sh
Actian Corporation recently entered into a cooperative relationship with VectorWise BV to integrate its VectorWise technology into the Ingres RDBMS server. The resulting commercial product has already achieved phenomenal performance results with the TPC-H industry standard benchmark, and has been we
Compiling database queries into executable (sub-) programs provides substantial benefits comparing to traditional interpreted execution. Many of these benefits, such as reduced interpretation overhead, better instruction code locality, and providing opportunities to use SIMD instructions, have previ
Editorial work for DEBULL on a special issue on data management on Storage Class Memory (SCM) technologies.
We investigate techniques to automatically decompose any XQuery queryincluding updating queries specified by the XQuery Update Facility (XQUF)into subqueries, that can be executed near their data sources, i.e., function-shipping. The main challenge addressed here is to ensure that the decomposed que
Traditional optimizers fail to pick good execution plans, when faced with increasingly complex queries and large data sets. This failure is even more acute in the context of XQuery, due to the structured nature of the XML language. To overcome the vulnerabilities of traditional optimizers, we have p
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