My article, Virtuoso, a Hybrid RDBMS/Graph Column Store (PDF), can be found in Volume 35, Number 1, March 2012 (PDF) of the Bulletin of the IEEE Computer Society Technical Committee on Data Engineering (also known as the IEEE Data Engineering Bulletin).
Abstract:
We discuss applying column store techniques to both graph (RDF) and relational data for mixed workloads ranging from lookup to analytics in the context of the OpenLink Virtuoso DBMS. In so doing, we need to obtain the excellent memory efficiency, locality and bulk read throughput that are the hallmark of column stores while retaining low-latency random reads and updates, under serializable isolation.
DBLP BibTeX Record 'journals/debu/Erling12' (XML)
@article{DBLP:journals/debu/Erling12,
author = {Orri Erling},
title = {Virtuoso, a Hybrid RDBMS/Graph Column Store},
journal = {IEEE Data Eng. Bull.},
volume = {35},
number = {1},
year = {2012},
pages = {3-8},
ee = {http://sites.computer.org/debull/A12mar/vicol.pdf},
bibsource = {DBLP, http://dblp.uni-trier.de}
}