DBMS > Amazon SimpleDB vs. Atos Standard Common Repository vs. Galaxybase vs. VelocityDB

System Properties Comparison Amazon SimpleDB vs. Atos Standard Common Repository vs. Galaxybase vs. VelocityDB

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Editorial information provided by DB-Engines
Name	Amazon SimpleDB  Xexclude from comparison	Atos Standard Common Repository  Xexclude from comparison	Galaxybase  Xexclude from comparison	VelocityDB  Xexclude from comparison
		This system has been discontinued and will be removed from the DB-Engines ranking.
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	Highly scalable database system, designed for managing session and subscriber data in modern mobile communication networks	Scalable, ACID-compliant native distributed parallel graph platform	A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database model	Key-value store	Document store Key-value store	Graph DBMS	Graph DBMS Object oriented DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 1.88 Rank #133   Overall #23   Key-value stores		Score 0.07 Rank #377   Overall #40   Graph DBMS	Score 0.11 Rank #354   Overall #37   Graph DBMS #15   Object oriented DBMS
Website	aws.amazon.com/­simpledb	atos.net/en/convergence-creators/portfolio/standard-common-repository	galaxybase.com	velocitydb.com
Technical documentation	docs.aws.amazon.com/­simpledb			velocitydb.com/­UserGuide
Developer	Amazon	Atos Convergence Creators	Chuanglin(Createlink) Technology Co., Ltd 浙江创邻科技有限公司	VelocityDB Inc
Initial release	2007	2016	2017	2011
Current release		1703	Nov 20, November 2021	7.x
License Commercial or Open Source	commercial	commercial	commercial	commercial
Cloud-based only Only available as a cloud service	yes	no	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language		Java	C and Java	C#
Server operating systems	hosted	Linux	Linux	Any that supports .NET
Data scheme	schema-free	Schema and schema-less with LDAP views	Strong typed schema	yes
Typing predefined data types such as float or date	no	optional	yes	yes
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.		yes	no	no
Secondary indexes	yes All columns are indexed automatically	yes	yes	yes
SQL Support of SQL	no	no	no	no
APIs and other access methods	RESTful HTTP API	LDAP	Browser interface console (shell) Graph API (Gremlin) OpenCypher Proprietary native API	.Net
Supported programming languages	.Net C C++ Erlang Java PHP Python Ruby Scala	All languages with LDAP bindings	Go Java Python	.Net
Server-side scripts Stored procedures	no	no	user defined procedures and functions	no
Triggers	no	yes		Callbacks are triggered when data changes
Partitioning methods Methods for storing different data on different nodes	none Sharding must be implemented in the application	Sharding cell division	Sharding	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	yes	yes
MapReduce Offers an API for user-defined Map/Reduce methods	no		no	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency Immediate Consistency can be specified for read operations	Immediate Consistency or Eventual Consistency depending on configuration	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	yes Relationships in graphs	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no Concurrent data updates can be detected by the application	Atomic execution of specific operations	ACID	ACID
Concurrency Support for concurrent manipulation of data	yes	yes	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.		yes	yes	yes
User concepts Access control	Access rights for users and roles can be defined via the AWS Identity and Access Management (IAM)	LDAP bind authentication	Role-based access control	Based on Windows Authentication
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More resources
	Amazon SimpleDB	Atos Standard Common Repository	Galaxybase	VelocityDB
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
Recent citations in the news	A Place for Everything – Amazon SimpleDB 14 December 2007, AWS Blog Amazon DynamoDB Serves Trillions Of Requests Per Month While Counterpart SimpleDB Is No Longer A Listed ... 12 November 2013, TechCrunch Amazon SimpleDB Management in Eclipse 22 July 2009, AWS Blog Good Advice on Keeping Your Database Simple and Fast. 25 March 2009, All Things Distributed Amazon Goes Back to the Future With 'NoSQL' Database 19 January 2012, WIRED provided by Google News

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