Archive for the ‘4store’ Category


Saturday, June 1st, 2013


From the about page:

4store is a database storage and query engine that holds RDF data. It has been used by Garlik as their primary RDF platform for three years, and has proved itself to be robust and secure.

4store’s main strengths are its performance, scalability and stability. It does not provide many features over and above RDF storage and SPARQL queries, but if your are looking for a scalable, secure, fast and efficient RDF store, then 4store should be on your shortlist.

This was mentioned in a report by Bryan Thompson so I wanted to capture a link to the original site.

The latest tarball is dated 10 July 2012.

Literature Survey of Graph Databases

Tuesday, February 19th, 2013

Literature Survey of Graph Databases by Bryan Thompson.

I can understand Danny Bickson, Literature survey of graph databases, being excited about the coverage of GraphChi in this survey.

However, there are other names you will recognize as well (TOC order):

  • RDF3X
  • Diplodocus
  • GraphChi
  • YARS2
  • 4store
  • Virtuoso
  • Bigdata
  • Graph partitioning
  • Accumulo
  • Urika
  • Scalable RDF query processing on clusters and supercomputers (a system with no name at Rensselaer Polytechnic)

As you can tell from the system names, the survey focuses on processing of RDF.

In reviewing one system, Bryan remarks:

Only small data sets were considered (100s of millions of edges). (emphasis added)

I think that captures the focus of the paper better than any comment I can make.

A must read for graph heads!