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System Cassandra (Datastax) AWS Aurora
 Version 2.1 Version 4.2.8
 Drawbacks Paid Version, License Fees, Support Fees NA
 Advantages DB Failover capability, Enterprise support available Managed RDBMS from AWS
 Website www.datastax.com aws.amazon.com/rds/aurora/
 XML Support Not Available.Generally not available in NOSQL DB. Well known RDBMS have this feature no
 Name Cassandra (Datastax) AWS Aurora
 Languages Supported C C# C++ Java Node.js PHP Python Ruby Content Management Interoperability Services (CMIS)
 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 Aurora is available as part of the Amazon Relational Database Service (RDS). Although it is a proprietary technology it offers MySQL compatible service since its release . This was made PostgreSQL compatible since October 2017
 Database Model Primarily a NoSQL database Relational Database
 Technical Documentation docs.datastax.com https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Overview.html
 License Commercial Commercial
 Cloud-based / SaaS Virtual Machine Images available in AWS and Azure Marketplace. Available as a Hybrid Cloud SaaS Option - NA SaaS Service from AWS
 Implementation Language C,C++ NA
 Operating System Supported Linux, OS X, Not Applicable as its managed by AWS
 Options for Integration / Access API CQL (Cassandra Query Language is like SQL) Gremlin Restful HTTP
 Consistency Highly Consistent NA
 Foreign Keys No Yes
 Streaming Support Yes Yes
 Analytics Support One of the core features is to build timeseries apps NA
 Data Storage Schema Key Value Column Family NoSQL DB NA
 Notable Users Samsung Smartthings, ING Vysya , Safeway NA
 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) Supports MySQL as a SaaS service (Inno Db Engine). Disk Space provisioning done in 10 GB chunks automatically upto 64 TB.
 Concurrency Yes Yes
 Partitioning Yes No
 Replication Yes Yes
 Secondary Indexes Yes Yes based on secondary indexes using Solr
 SchemaLess Yes Yes
 SQL Query No, but CQL is similar to SQL No