DBMS > Amazon SimpleDB vs. IBM Cloudant vs. Microsoft Azure SQL Database vs. STSdb

System Properties Comparison Amazon SimpleDB vs. IBM Cloudant vs. Microsoft Azure SQL Database vs. STSdb

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Editorial information provided by DB-Engines
Name	Amazon SimpleDB  Xexclude from comparison	IBM Cloudant  Xexclude from comparison	Microsoft Azure SQL Database formerly SQL Azure  Xexclude from comparison	STSdb  Xexclude from comparison
Description	Hosted simple database service by Amazon, with the data stored in the Amazon Cloud. There is an unrelated product called SimpleDB developed by Edward Sciore	Database as a Service offering based on Apache CouchDB	Database as a Service offering with high compatibility to Microsoft SQL Server	Key-Value Store with special method for indexing optimized for high performance using a special indexing method
Primary database model	Key-value store	Document store	Relational DBMS	Key-value store
Secondary database models			Document store Graph DBMS Spatial DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 2.10 Rank #122   Overall #24   Key-value stores	Score 3.26 Rank #95   Overall #17   Document stores	Score 86.01 Rank #15   Overall #10   Relational DBMS	Score 0.01 Rank #359   Overall #56   Key-value stores
Website	aws.amazon.com/­simpledb	www.ibm.com/­cloud/­cloudant	azure.microsoft.com/­en-us/­services/­sql-database	github.com/­STSSoft/­STSdb4
Technical documentation	docs.aws.amazon.com/­simpledb	cloud.ibm.com/­docs/­Cloudant	docs.microsoft.com/­en-us/­azure/­azure-sql
Developer	Amazon	IBM, Apache Software Foundation IBM acquired Cloudant in February 2014	Microsoft	STS Soft SC
Initial release	2007	2010	2010	2011
Current release			V12	4.0.8, September 2015
License Commercial or Open Source	commercial	commercial	commercial	Open Source GPLv2, commercial license available
Cloud-based only Only available as a cloud service	yes	yes	yes	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language		Erlang	C++	C#
Server operating systems	hosted	hosted	hosted	Windows
Data scheme	schema-free	schema-free	yes	yes
Typing predefined data types such as float or date	no	no	yes	yes primitive types and user defined types (classes)
XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.		no	yes
Secondary indexes	yes All columns are indexed automatically	yes	yes	no
SQL Support of SQL	no	no	yes	no
APIs and other access methods	RESTful HTTP API	RESTful HTTP/JSON API	ADO.NET JDBC ODBC	.NET Client API
Supported programming languages	.Net C C++ Erlang Java PHP Python Ruby Scala	C# Java JavaScript Objective-C PHP Ruby	.Net C# Java JavaScript (Node.js) PHP Python Ruby	C# Java
Server-side scripts Stored procedures	no	View functions (Map-Reduce) in JavaScript	Transact SQL	no
Triggers	no	yes	yes	no
Partitioning methods Methods for storing different data on different nodes	none Sharding must be implemented in the application	Sharding		none
Replication methods Methods for redundantly storing data on multiple nodes	yes	Multi-source replication Source-replica replication	yes, with always 3 replicas available	none
MapReduce Offers an API for user-defined Map/Reduce methods	no	yes	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency Immediate Consistency can be specified for read operations	Eventual Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	yes	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no Concurrent data updates can be detected by the application	no atomic operations within a document possible	ACID	no
Concurrency Support for concurrent manipulation of data	yes	yes Optimistic locking	yes	yes
Durability Support for making data persistent	yes	yes	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.		no
User concepts Access control	Access rights for users and roles can be defined via the AWS Identity and Access Management (IAM)	Access rights for users can be defined per database	fine grained access rights according to SQL-standard	no
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More resources
	Amazon SimpleDB	IBM Cloudant	Microsoft Azure SQL Database formerly SQL Azure	STSdb
DB-Engines blog posts	The popularity of cloud-based DBMSs has increased tenfold in four years 7 February 2017, Matthias Gelbmann Amazon - the rising star in the DBMS market 3 August 2015, Matthias Gelbmann show all