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System AWS DynamoDB Mongo DB
 Version released Jan 2012 3.6
 Drawbacks Very few features when compared to other key-value stores Found to be slow for a nosql db
 Advantages Managed Database Service provided by a leading cloud provider Modelling a nosql db using reverse engineering a rdbms with mongodb is good. you can build nice relations
 Languages Supported Java, Node.js, Go, C# .NET, Perl, PHP, Python, Ruby, Haskell and Erlang. nodejs,java
 Website aws.amazon.com/­dynamodb www.mongodb.com
 Name Amazon DynamoDB MongoDB
 XML Support no no
 JSON Support yes yes
 Brief description 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 MongoDB is a free and open-source cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with schemata. MongoDB is developed by MongoDB Inc.
 Database Model Key Value Model Primarily a NoSQL database
 Technical Documentation aws.amazon.com/­documentation/­dynamodb docs.mongodb.com/manual
 License commercial on aws cloud. Commercial
 Cloud-based / SaaS Yes but you can download dynamod db locally as well. Local installation does not have vendor support Virtual Machine Images available in AWS Azure and Google Cloud Marketplace. https://bitnami.com/stack/MongoDB Can also install in MongoDB Cloud called Atlas
 Implementation Language C++ C,C++
 Operating System Supported Linux , OS X, Windows Linux OS X Solaris Windows
 Options for Integration / Access API Rest API Proprietary protocol using JSON
 Consistency Immediate consistency Highly Consistent
 Foreign Keys No No
 Streaming Support No Yes
 Analytics Support NA One of the core features is to build document hierarchy in json
 Data Storage Schema Key Value Model Key Value NoSQL Model functioning as a Document Model
 Notable Users As per Amazon the solution has been deployed by around 100,000 customers Metlife
 Key Differentiator Amazon allows developers to purchase a service based on throughput, rather than storage. Leading Open Source NoSQL Document DB
 Concurrency Yes Yes
 Partitioning Sharding Yes
 Replication Multi Data Center Replication supported Yes
 Secondary Indexes Yes Yes
 SchemaLess Yes Yes
 SQL Query No ReadOnly Queries using MongoDB Connector