In this article, we survey recent research on column-oriented database systems, or column-
stores, where each attribute of a table is stored in a separate file or region on storage. Such …

Database systems tend to achieve only low IPC (instructions-per-cycle) efficiency on modern
CPUs in compute-intensive application areas like decision support, OLAP and multimedia …

Column-oriented database system architectures invite a re-evaluation of how and when data
in databases is compressed. Storing data in a column-oriented fashion greatly increases the …

There has been a significant amount of excitement and recent work on column-oriented
database systems (" column-stores"). These database systems have been shown to perform …

Despite the intense interest towards realizing the Semantic Web vision, most existing RDF
data management schemes are constrained in terms of efficiency and scalability. Still, the …

Efficient management of RDF data is an important factor in realizing the Semantic Web
vision. Performance and scalability issues are becoming increasingly pressing as Semantic …

Database indices provide a non-discriminative navigational infrastructure to localize tuples
of interest. Their maintenance cost is taken during database updates. In this paper, we study …

Efficient management of RDF data is an important prerequisite for realizing the Semantic
Web vision. Performance and scalability issues are becoming increasingly pressing as …

There has been renewed interest in column-oriented database architectures in recent years.
For read-mostly query workloads such as those found in data warehouse and decision …

Web graphs are approximate snapshots of the web, created by search engines. They are
essential to monitor the evolution of the web and to compute global properties like …