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).
 | |
| 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 |
Amazon acquired the Blazegraph developers and the Blazegraph open source development was essentially stopped in April 2018.[7]
Early history edit
The system was first known as Bigdata. Since release of version 1.5 (12 February 2015), it is named Blazegraph.[8][9]
Prominent users edit
- 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 edit
- 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 SPARQL and Gremlin;[14][15]
- as an alternative to Gremlin querying, GAS abstraction over RDF graphs support in SPARQL;[16]
- 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) edit
It was alleged[20] that Amazon Neptune is based on Blazegraph, as evidenced by:
References edit
- ^ 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; Hose, Katja; Schenkel, Ralf (eds.). Linked data management. CRC Press. pp. 193–237. 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". arXiv:1406.3399 [cs.DB].
- ^ Hartig, Olaf (2014). "Reconciliation of RDF* and Property Graphs". arXiv:1409.3288 [cs.DB].
- ^ "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.
- ^ Fu, Zhisong; Personick, Michael (2014). MapGraph: A High Level API for Fast Development of High Performance Graph Analytics on GPUs. pp. 1–6. ISBN 978-1-4503-2982-8.
{{cite book}}:|journal=ignored (help) - ^ "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.