Column-Store Support for RDF Data Management: Not All Swans Are White

This paper reports on the results of an independent evaluation of the techniques presented in the VLDB 2007 paper "Scalable Semantic Web Data Management Using Vertical Partitioning", authored by D. Abadi, A. Marcus, S. R. Mad-den, and K. Hollenbach. The authors revisit the proposed bench-mark and examine both the data and query space coverage. The benchmark is extended to cover a larger portion of the query space in a canonical way. Repeatability of the experiments is assessed using the code base obtained from the authors. Inspired by the proposed vertically-partitioned storage solution for RDF data and the performance figures using a column-store, they conduct a complementary analysis of state-of-the-art RDF storage solutions.