Blazegraph
 | |
| Developer(s) | Systap |
|---|---|
| Stable release | 2.1.5
/ 19 March 2019[1] |
| Preview release | 2.1.6rc
/ 3 February 2020[1] |
| Repository | |
| Written in | Java |
| Type | Graph database |
| License | GNU GPL (version 2)[2] |
| Website | blazegraph |
Blazegraph is an open source triplestore and graph database,[3][4][5][6] developed by Systap, which is used in the Wikidata SPARQL endpoint and by other large customers. It is licensed under the GNU GPL (version 2).
Amazon acquired the Blazegraph developers and the Blazegraph open source development was essentially stopped in April 2018.[7]
Early history
The system was first known as Bigdata. Since release of version 1.5 (12 February 2015), it is named Blazegraph.[8][9]
Prominent users
- The Wikimedia Foundation uses Blazegraph for the Wikidata Query Service, which is a SPARQL endpoint.[10]
- The Datatourisme project uses Blazegraph as the database platform; however, GraphQL is used as the query language instead of SPARQL.[11]
Notable features
- RDF* — an alternative approach to RDF reification,[12] which gives RDF graphs capabilities of LPG graphs;[13]
- as the consequence of the previous, ability of querying graphs both in
- as an alternative to
- The
SERVICEsyntax of federated queries for functionality extending;[17] - Managed behavior of the query plan generator;[18]
- Reusable named subqueries.[19]
Acqui-hiring by Amazon Web Service (AWS)
It was alleged[20] that Amazon Neptune is based on Blazegraph, as evidenced by:
- acquiring of the Blazegraph trademark by AWS;[21]
- acquiring of the blazegraph.com domain name by AWS;[22]
- transition of many employees (including CEO) to AWS.[23]
References
- ^ a b "Releases - blazegraph/database". Retrieved 8 March 2020 – via GitHub.
- ^ "LICENSE.txt file". Retrieved 8 March 2020 – via GitHub.
- ^
Kiryakov, Atanas; Mariana, Damova (2011). "Chapter 7: Storing the Semantic Web: Repositories". In Domingue, John; Fensel, Dieter; Hendler, James A. (eds.). Handbook of Semantic Web Technologies. Springer-Verlag Berlin Heidelberg. pp. 271–272. ISBN 978-3-540-92912-3.
- ^
Thompson, Bryan; Personick, Mike; Cutcher, Martin (2014). "Chapter 8: The bigdata RDF Graph Database". In Harth, Andreas; ISBN 978-1-466-58240-8.
- ^
Sikos, Leslie (2015). Mastering structured data on the Semantic Web. APress. p. 171. ISBN 978-1-4842-1049-9.
- ^
Sakr, Sh.; Wylot, M.; Mutharaju, R.; Le Phuoc, D.; Fundulaki, I. (2018). Linked Data: Storing, Querying, and Reasoning. Springer International Publishing Imprint Springer. pp. 70–71. ISBN 978-3-319-73515-3.
- ^ "Blazegraph fork?". GitHub. 12 April 2018.
- ^ "Blazegraph - Semantic Web Standards". W3.org. Retrieved 2018-08-29.
- ^ "Announcing Blazegraph Release 1.5.0 | Blazegraph(tm)". blog.blazegraph.com. Retrieved 2018-09-17.
- ^ "[Wikidata-tech] Wikidata Query Backend Update (take two!)". lists.wikimedia.org. Retrieved 2018-08-29. (The message also contains a link to the graph databases comparison performed by Wikimedia.)
- ^ "Principes de l'API". Framagit.io (in French). Retrieved 2018-08-29.
- ^ Hartig, Olaf; Thompson, Bryan (2014). "Foundations of an Alternative Approach to Reification in RDF". ].
- ].
- ^ "TinkerPop-enabled Providers". tinkerpop.apache.org. Archived from the original on 2018-02-10. Retrieved 2018-08-29. (Currently, the Blazegraph logo is replaced with the Amazon Neptune logo.)
- ^ "Blazegraph TinkerPop Implementation". GitHub.com. Retrieved 2018-08-29.
- )
- ^ "Wikidata Query Service: User manual. Extensions". MediaWiki.org. Retrieved 2018-08-29.
- ^ "Query Hints". Blazegraph Wiki. Retrieved 2018-08-29.
- ^ "Named Subquery". Blazegraph Wiki. Retrieved 2018-08-29.
- ^ "SPARQL and Amazon Web Service's Neptune database". Bob DuCharme's weblog. Retrieved 2018-08-29.
- ^ "BLAZEGRAPH Trademark of Amazon Technologies, Inc.. Serial Number: 86498414". Trademarkia.com. Retrieved 2018-08-29.
- ^ "blazegraph.com". ICANN WHOIS. Retrieved 2018-08-29.
- ^ "Bradley Bebee". LinkedIn.com. Retrieved 2018-08-29.