Virtuoso, a Hybrid RDBMS/Graph Column Store.
Orri Erling · IEEE Data(base) Engineering Bulletin · 2012
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.