Dydra

What Dydra is

Dydra is a cloud-based graph database for information built around relationships, such as social networks, movie connections and transaction logs. It stores data as a property graph and supports SPARQL 1.1 queries and updates, with a standard SPARQL endpoint for each repository. A REST API and Ruby client gem are also available; the gem can be used from the command line. Repositories can import RDFa, RDF/JSON, N-Quads, N-Triples, RDF/XML, TriG and Turtle, and export N-Triples, Turtle and RDF/XML. Dydra says it manages the data store, including versioning, disaster recovery and performance. Reasoning and federated queries are supported, though federation is disabled for public service accounts. Those evaluation accounts are limited to five queries per second, and the FAQ asks that repositories stay at or below one million statements. Customers retain ownership of their data and can delete it at any time. The free Basic use plan lists limited resources; production licensing and services are tailored to customer needs. Getting started quickly requires familiarity with RDF and SPARQL.