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System Cassandra (Datastax) Ontotext
 Version 2.1 8.5.0 as of 2018-March
 Drawbacks Paid Version, License Fees, Support Fees NA
 Advantages DB Failover capability, Enterprise support available Quick and easy to setup. Performance very fast
 Website www.datastax.com www.graphdb.ontotext.com
 XML Support Not Available.Generally not available in NOSQL DB. Well known RDBMS have this feature no
 Name Cassandra (Datastax) GraphDB / Ontotext
 Languages Supported C C# C++ Java Node.js PHP Python Ruby NA
 JSON Support yes yes
 Brief description DataStax was built on the open source NoSQL database Apache Cassandra. Cassandra was initially developed internally at Facebook to handle large data sets across multiple servers. It was released as an Apache open source project in 2008 Graph Database based on RDF. Helps to build a data platform. Native support for text search.Support for a database cluster.
 Database Model Primarily a NoSQL database RDF Store, Graph Database
 Technical Documentation docs.datastax.com graphdb.ontotext.com/documentation
 License Commercial commercial. Community edition can be used perpetually
 Cloud-based / SaaS Virtual Machine Images available in AWS and Azure Marketplace. Available as a Hybrid Cloud SaaS Option - NA Amazon AMI available
 Implementation Language C,C++ NA
 Operating System Supported Linux, OS X, Linux , OS X, Windows
 Options for Integration / Access API CQL (Cassandra Query Language is like SQL) Gremlin Java API , RDF4j API,SPARQL 1.1, GeoSPARQL, GraphQL?
 Consistency Highly Consistent Eventual consistency
 Foreign Keys No No
 Streaming Support Yes No
 Analytics Support One of the core features is to build timeseries apps Yes. Native text search and probalisitic capabalities
 Data Storage Schema Key Value Column Family NoSQL DB RDF
 Notable Users Samsung Smartthings, ING Vysya , Safeway --
 Key Differentiator Graph DB built natively on top of the core NoSQL Column Store. Graph and NoSQL component share the same core. Enterprise version of Cassandra supports HighAvailability (HA) --
 Concurrency Yes --
 Partitioning Yes --
 Replication Yes --
 Secondary Indexes Yes --
 SchemaLess Yes --
 SQL Query No, but CQL is similar to SQL --