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System CouchDB AWS DynamoDB
 Name CouchDB Amazon DynamoDB
 Version 3.3.5 released Jan 2012
 Drawbacks 1 Does not have capabilities present in an RDF data store e.g does not support SparQL Very few features when compared to other key-value stores
 Advantages NA Managed Database Service provided by a leading cloud provider
 Languages Supported .net, C#, Javascript Java, Node.js, Go, C# .NET, Perl, PHP, Python, Ruby, Haskell and Erlang.
 Website apache.couchdb.org aws.amazon.com/­dynamodb
 XML Support NA no
 JSON Support yes yes
 Brief description Open Source Transactional database with native graph storage and processing Amazon DynamoDB is a fully managed proprietary NoSQL database service that supports key-value and document data structures[2] and is offered by Amazon.com as part of the Amazon Web Services portfolio
 Database Model Property Graph Key Value Model
 Technical Documentation docs.microsoft.com/­en-us/­azure/­cosmos-db aws.amazon.com/­documentation/­dynamodb
 License Community license can be run on 1 node.Enterprise License supports multi-node cluster deployment commercial on aws cloud.
 Cloud-based / SaaS Amazon AMI available, On Prem can be installed Yes but you can download dynamod db locally as well. Local installation does not have vendor support
 Implementation Language Java API C++
 Operating System Supported Linux , OS X, Windows Linux , OS X, Windows
 Options for Integration / Access API Rest API Rest API
 Consistency NA Immediate consistency
 Foreign Keys No No
 Streaming Support No No
 Analytics Support No NA
 Data Storage Schema Key Value Store presented as Document DB Key Value Model
 Notable Users -- As per Amazon the solution has been deployed by around 100,000 customers
 Key Differentiator -- Amazon allows developers to purchase a service based on throughput, rather than storage.
 Concurrency -- Yes
 Partitioning -- Sharding
 Replication -- Multi Data Center Replication supported
 Secondary Indexes -- Yes
 SchemaLess -- Yes
 SQL Query -- No