Blazegraph

The system was first known as Bigdata. Since release of version 1.5 (12 February 2015), it is named Blazegraph. == Prominent users ==

• The Wikimedia Foundation uses Blazegraph for the Wikidata Query Service, which is a SPARQL endpoint. • Sophox, a fork of the Wikidata Query Service, specializes in OpenStreetMap queries. • The Datatourisme project uses Blazegraph as the database platform; however, GraphQL is used as the query language instead of SPARQL. == Notable features ==

• RDF* — an alternative approach to RDF reification, which gives RDF graphs capabilities of graphs; • as the consequence of the previous, ability of querying graphs both in SPARQL and Gremlin; • as an alternative to Gremlin querying, abstraction over RDF graphs support in SPARQL; • The SERVICE syntax of federated queries for functionality extending; • Managed behavior of the query plan generator; • Reusable named subqueries. == Acqui-hiring by Amazon Web Service (AWS) ==

Amazon Neptune is based on Blazegraph. • acquiring of the Blazegraph trademark by AWS; • acquiring of the blazegraph.com domain name by AWS;{{cite web|url= https://whois.icann.org/en/lookup?name=blazegraph.com • transition of many employees (including CEO) to AWS.{{cite web|url=https://www.linkedin.com/in/bradley-bebee-a15764b/ == References ==