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System AllegroGraph Cassandra (Datastax)
 Version AllegroGraph 6.4.2 [2018-06-18] 2.1
 Drawbacks NA Paid Version, License Fees, Support Fees
 Advantages -Database being explicitly pre-structured
-Data to self-define the schema at the time of ingest
-Able to connect concepts, properties, and entities across multiple databases and without further coding to extract new, actionable business insights from your data
DB Failover capability, Enterprise support available
 Website www.allegrograph.com,
 XML Support yes Not Available.Generally not available in NOSQL DB. Well known RDBMS have this feature
 Name AllegroGraph Cassandra (Datastax)
 Languages Supported Java, Python, Ruby, Perl, C#, Clojure and Common Lisp C C# C++ Java Node.js PHP Python Ruby
 JSON Support yes yes
 Brief description -Modern, high-performance, persistent graph database
-Uses efficient memory utilization in combination with disk-based storage, enabling it to scale to billions of quads while maintaining superior performance
-Supports SPARQL, RDFS++ and Prolog reasoning from numerous applications
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
 Database Model Graph Database, A triplestore or RDF store Primarily a NoSQL database
 Technical Documentation franz.com/agraph/support/documentation/current/agraph-introduction.html docs.datastax.com
 License Commercial Commercial
 Cloud-based / SaaS No Virtual Machine Images available in AWS and Azure Marketplace. Available as a Hybrid Cloud SaaS Option - NA
 Implementation Language Common Lisp C,C++
 Operating System Supported Windows, Linux, and Mac OS X Linux, OS X,
 Options for Integration / Access API Java, Python, Common Lisp and other APIs CQL (Cassandra Query Language is like SQL) Gremlin
 Consistency Yes Highly Consistent
 Foreign Keys No No
 Streaming Support Yes Yes
 Data Storage Schema Yes Key Value Column Family NoSQL DB
 Analytics Support Yes, AllegroGraph Recognized Among Top 10 Analytics Solution Providers by Pharma Tech Outlook for 2016 One of the core features is to build timeseries apps
 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