Content Management repository is a graph – Part I


In October, I attended the GraphConnect 2014 in San Francisco. GraphConnect is a conference and an event organised by Neo Technology, the company behind Neo4J, one of most important NoSql database.

Neo4j is a graph database, a database that uses graph structures with nodes, edges, and properties to represent and store data. A graph database provides a mechanism for storage and retrieval of data that is modeled in means other than the tabular relations used in relational databases. NoSQL databases can be classified in five categories,

  • Column: like Accumulo, Cassandra, Druid, HBase
  • Document: like Clusterpoint, Apache CouchDB, Couchbase, MarkLogic, MongoDB
  • Key-value: like Dynamo, FoundationDB, MemcacheDB, Redis, Riak, FairCom c-treeACE, Aerospike
  • Graph: like Allegro, Neo4J, InfiniteGraph, OrientDB, Virtuoso, Stardog

If you are looking for a new technology to learn or to approach, for sure every NoSQL field is cool enough to require attention (and to provide great visibility in the labour market). Among NoSQL databases, graph databases are the coolest technology. As reported during the GraphConnect conference by Emil Eifrem, founder and Ceo of Neo Technology, “Graphs are eating the world”. This sentence is not just a slogan, instead it describes clearly, what is happening. The image reported below (source confirms that, with no doubts:

The DB-Engines Ranking is a list of database management systems ranked by their current popularity. DB-Engine Ranking algorithms measures the interest to database vendors and database model (as reported in the graph) using: number of mentions on websites, Google Trends, frequency of technical discussions, number of job offers, number of profiles in professional networks, number of Twitter tweets, in which the db system or db model is mentioned. I don’t know how the ranking algorithm works in detail but the graph is clear: graph databases is growing in popularity more than any other NoSQL technologies.

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