Datomic

Datomic
Original author(s)	Rich Hickey, Stuart Halloway, Justin Gehtland
Developer(s)	Cognitect
Initial release	2012; 14 years ago
Stable release	1.0.7387 / June 27, 2025; 10 months ago
Written in	Clojure
Type	Datalog, NoSQL
License	Apache 2.0 (binaries only)
Website	datomic.com

Datomic is a distributed database and implementation of Datalog.^[3]^[4] It has ACID transactions, joins, and a logical query language, Datalog.^[5]^[6] A distinguishing feature of Datomic is that time is a basic feature of data entities.^[7]

Architecture

It has been designed for first-class use with JVM languages such as Java and Clojure.^[8]

In its reference architecture, Datomic uses peers^[9] and transactors^[10] which run on the JVM.

References

↑ "Introduction | Datomic". https://docs.datomic.com/datomic-overview.html.
↑ "Datomic - Datomic is Free". https://blog.datomic.com/2023/04/datomic-is-free.html.
↑ Hickey, Rich (2013-02-01). "The Datomic Information Model". http://www.infoq.com/articles/Datomic-Information-Model.
↑ Halloway, Stuart. "Datomic: A New Database". The Strange Loop. Archived from the original on 2013-03-09. https://web.archive.org/web/20130309150858/https://thestrangeloop.com/sessions/datomic-a-new-database-system. Retrieved 2013-02-04.
↑ "Datomic Rationale". Cognitect. Archived from the original on 2013-07-08. https://web.archive.org/web/20130708152901/https://www.datomic.com/rationale.html. Retrieved 2013-02-04.
↑ Hunger, Michael. "Rich Hickey's Datomic embraces Cloud, intelligent Applications and Consistency". http://www.infoq.com/news/2012/04/datomic. Retrieved 2013-02-04.
↑ Kiel, Alexander (2013-02-05). "Datomic - A Functional Database". Leipzig University. http://www.bioinf.uni-leipzig.de/conference-registration/13haskell/submissions/hal8_submission_17.pdf.
↑ Hickey, Rich (2012-06-06). "The Design of Datomic". https://www.infoq.com/presentations/The-Design-of-Datomic/.
↑ "Overview of Peers in Datomic". https://docs.datomic.com/on-prem/overview/overview.html#the-peer-server.
↑ "Datomic Transactor". https://docs.datomic.com/on-prem/overview/transactor.html.

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Original source: https://en.wikipedia.org/wiki/Datomic. Read more

[1] "Introduction | Datomic". https://docs.datomic.com/datomic-overview.html.

[2] "Datomic - Datomic is Free". https://blog.datomic.com/2023/04/datomic-is-free.html.

[3] Hickey, Rich (2013-02-01). "The Datomic Information Model". http://www.infoq.com/articles/Datomic-Information-Model.

[4] Halloway, Stuart. "Datomic: A New Database". The Strange Loop. Archived from the original on 2013-03-09. https://web.archive.org/web/20130309150858/https://thestrangeloop.com/sessions/datomic-a-new-database-system. Retrieved 2013-02-04.

[5] "Datomic Rationale". Cognitect. Archived from the original on 2013-07-08. https://web.archive.org/web/20130708152901/https://www.datomic.com/rationale.html. Retrieved 2013-02-04.

[6] Hunger, Michael. "Rich Hickey's Datomic embraces Cloud, intelligent Applications and Consistency". http://www.infoq.com/news/2012/04/datomic. Retrieved 2013-02-04.

[7] Kiel, Alexander (2013-02-05). "Datomic - A Functional Database". Leipzig University. http://www.bioinf.uni-leipzig.de/conference-registration/13haskell/submissions/hal8_submission_17.pdf.

[8] Hickey, Rich (2012-06-06). "The Design of Datomic". https://www.infoq.com/presentations/The-Design-of-Datomic/.

[PeerJava-9] "Overview of Peers in Datomic". https://docs.datomic.com/on-prem/overview/overview.html#the-peer-server.

[10] "Datomic Transactor". https://docs.datomic.com/on-prem/overview/transactor.html.

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