Neo4j

Neo4j
Developer(s)Neo4j Inc.
Initial release2007; 17 years ago (2007)[1]
Stable release
5.25.1[2] Edit this on Wikidata / 31 October 2024; 7 days ago (31 October 2024)
Repository
Written inJava
TypeGraph database
License
Websiteneo4j.com

Neo4j is a graph database management system (GDBMS) developed by Neo4j Inc.

The data elements Neo4j stores are nodes, edges connecting them, and attributes of nodes and edges. Described by its developers as an ACID-compliant transactional database with native graph storage and processing,[3] Neo4j is available in a non-open-source "community edition" licensed with a modification of the GNU General Public License, with online backup and high availability extensions licensed under a closed-source commercial license.[4] Neo also licenses Neo4j with these extensions under closed-source commercial terms.[5]

Neo4j is implemented in Java and accessible from software written in other languages using the Cypher query language through a transactional HTTP endpoint, or through the binary "Bolt" protocol.[6][7][8][9] The "4j" in Neo4j is a reference to its being built in Java, however is now largely viewed as an anachronism.[10]

  1. ^ Neubauer, Peter [@peterneubauer] (17 Feb 2010). "@sarkkine #Neo4j was developed as part of a CMS SaaS 2000-2007, became released OSS 2007 when Neo Technology spun out" (Tweet) – via Twitter.
  2. ^ https://neo4j.com/release-notes/database/neo4j-5/. {{cite web}}: Missing or empty |title= (help)
  3. ^ Neo Technology. "Neo4j Graph Database". Retrieved 2015-11-04.
  4. ^ Philip Rathle (November 15, 2018). "Simplicity Wins: We're Shifting to an Open Core Licensing Model for Neo4j Enterprise Edition". Retrieved 2019-01-16.
  5. ^ Emil Eifrem (April 13, 2011). "Graph Databases, Licensing and MySQL". Archived from the original on 2011-04-26. Retrieved 2011-04-29.
  6. ^ "Bolt Protocol".
  7. ^ Todd Hoff (June 13, 2009). "Neo4j - a Graph Database that Kicks Buttox". High Scalability. Possibility Outpost. Retrieved 2010-02-17.
  8. ^ Gavin Terrill (June 5, 2008). "Neo4j - an Embedded, Network Database". InfoQ. C4Media Inc. Retrieved 2010-02-17.
  9. ^ "5.1. Transactional Cypher HTTP endpoint". Retrieved 2015-11-04.
  10. ^ Dr. Jim Webber (June 8, 2020). "A Personal History of Neo4j". Neo4j. YouTube. Retrieved 2022-06-09.