VLDB 2010 , 36th International Conference on Very Large Data Bases   Singapore : 13 to 17 Sept 2010, Grand Copthorne Waterfront Hotel Proceedings: Workshop 11 Workshop 11 Semantic Data Management (SemData) Organizers: Reto Krummenacher, Karl Aberer and Atanas Kiryakov Industry Position Papers Directions and Challenges for Semdata By: Orri Erling The Features of BigOWLIM that Enabled the BBC’s World Cup Website By: Atanas Kiryakov, Barry Bishop, Damyan Ognyanoff, Ivan Peikov, Zdravko Tashev, Ruslan Velkov Research Papers SpiderStore: Exploiting Main Memory for Efficient RDF Graph Representation and Fast Querying By: Robert Binna, Wolfgang Gassler, Eva Zangerle, Dominic Pacher, G¨unther Specht SPARQL Query Answering on a Sharednothing Architecture By: Spyros Kotoulas, Jacopo Urbani Optimizing SPARQL queries over the Web of Linked Data By: B. R. Kuldeep Reddy, P. Sreenivasa Kumar Structure Index for RDF Data By: Thanh Tran, G¨unter Ladwig