Stardog

Stardog provides more insight, faster and easier. It unifies enterprise data that is based on semantic graphs, schema alignment, data modeling, and deep reasoning. With smart graph database technology, doing query, searches, inference and data virtualization has never been easy and effective.The latest version of Stardog supports RDF graph data model, SPARQL query language, property graph model as well as Gremlin graph traversal language.

Stardog’s High Availability clusters ensure that any failure will not affect the applications that depend on a single machine. Using clustered version can immediately resolve failures by automatically creating multiple copies of the service to make sure everything keeps running still. To ensure stability, Stardog uses Apache Zookeeper which has been tried and tested for this type of infrastructure. It promotes nodes to communicate effectively and be able to update or create new connections later on.Compared to relational database, graph database can handle more relationships or connections that a single enterprise may have. Stardog’s graph database makes it possible to work on multiple nodes at a given time and make sure that all information as safe and worked on with speed. Stardog has three versions that users can choose from depending on their needs. The community version does not have a license fee, has 10 databases, 25M triples per db and 8 concurrent connections. On the other hand, the Developer version is the most popular and has a 30 days free trial period. It offers unlimited machines, no limit on data, supported by email and is licensed per developer. Lastly, the enterprise version; features includes server management module, still no data limits and licensed per machine.