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System AWS Aurora AWS DynamoDB
 Name AWS Aurora Amazon DynamoDB
 Version Version 4.2.8 released Jan 2012
 Drawbacks NA Very few features when compared to other key-value stores
 Advantages Managed RDBMS from AWS Managed Database Service provided by a leading cloud provider
 Languages Supported Content Management Interoperability Services (CMIS) Java, Node.js, Go, C# .NET, Perl, PHP, Python, Ruby, Haskell and Erlang.
 Website aws.amazon.com/rds/aurora/ aws.amazon.com/­dynamodb
 XML Support no no
 JSON Support yes yes
 Brief description 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 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 Relational Database Key Value Model
 Technical Documentation https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Overview.html aws.amazon.com/­documentation/­dynamodb
 License Commercial commercial on aws cloud.
 Cloud-based / SaaS SaaS Service from AWS Yes but you can download dynamod db locally as well. Local installation does not have vendor support
 Implementation Language NA C++
 Operating System Supported Not Applicable as its managed by AWS Linux , OS X, Windows
 Options for Integration / Access API Restful HTTP Rest API
 Consistency NA Immediate consistency
 Foreign Keys Yes No
 Streaming Support Yes No
 Analytics Support NA NA
 Data Storage Schema NA Key Value Model
 Notable Users NA As per Amazon the solution has been deployed by around 100,000 customers
 Key Differentiator Supports MySQL as a SaaS service (Inno Db Engine). Disk Space provisioning done in 10 GB chunks automatically upto 64 TB. Amazon allows developers to purchase a service based on throughput, rather than storage.
 Concurrency Yes Yes
 Partitioning No Sharding
 Replication Yes Multi Data Center Replication supported
 Secondary Indexes Yes based on secondary indexes using Solr Yes
 SchemaLess Yes Yes
 SQL Query No No