DBMS > Amazon CloudSearch vs. Atos Standard Common Repository vs. FatDB vs. gStore

System Properties Comparison Amazon CloudSearch vs. Atos Standard Common Repository vs. FatDB vs. gStore

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Editorial information provided by DB-Engines
Name	Amazon CloudSearch  Xexclude from comparison	Atos Standard Common Repository  Xexclude from comparison	FatDB  Xexclude from comparison	gStore  Xexclude from comparison
		This system has been discontinued and will be removed from the DB-Engines ranking.	FatDB/FatCloud has ceased operations as a company with February 2014. FatDB is discontinued and excluded from the ranking.
Description	A hosted search engine service by Amazon with the data stored in Amazons cloud	Highly scalable database system, designed for managing session and subscriber data in modern mobile communication networks	A .NET NoSQL DBMS that can integrate with and extend SQL Server.	A native Graph DBMS to store and maintain very large RDF datasets.
Primary database model	Search engine	Document store Key-value store	Document store Key-value store	Graph DBMS RDF store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 1.81 Rank #137   Overall #12   Search engines			Score 0.14 Rank #342   Overall #34   Graph DBMS #16   RDF stores
Website	aws.amazon.com/­cloudsearch	atos.net/en/convergence-creators/portfolio/standard-common-repository		en.gstore.cn
Technical documentation	docs.aws.amazon.com/­cloudsearch			en.gstore.cn/­#/­enDocs
Developer	Amazon	Atos Convergence Creators	FatCloud
Initial release	2012	2016	2012	2016
Current release		1703		1.2, November 2023
License Commercial or Open Source	commercial	commercial	commercial	Open Source BSD
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#	C++
Server operating systems	hosted	Linux	Windows	Linux
Data scheme	yes	Schema and schema-less with LDAP views	schema-free	schema-free and OWL/RDFS-schema support
Typing predefined data types such as float or date	yes	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
Secondary indexes	yes all search fields are automatically indexed	yes	yes
SQL Support of SQL	no	no	no Via inetgration in SQL Server	no
APIs and other access methods	HTTP API	LDAP	.NET Client API LINQ RESTful HTTP API RPC Windows WCF Bindings	HTTP API SPARQL 1.1
Supported programming languages		All languages with LDAP bindings	C#	C++ Java JavaScript (Node.js) PHP Python
Server-side scripts Stored procedures	no	no	yes via applications	yes
Triggers	no	yes	yes via applications
Partitioning methods Methods for storing different data on different nodes	yes automatic partitioning across Amazon Search Instance as required	Sharding cell division	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	yes managed transparently by AWS	yes	selectable replication factor
MapReduce Offers an API for user-defined Map/Reduce methods	no		yes	no
Consistency concepts Methods to ensure consistency in a distributed system		Immediate Consistency or Eventual Consistency depending on configuration	Eventual Consistency Immediate Consistency
Foreign keys Referential integrity	no	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	Atomic execution of specific operations	no	yes
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		no
User concepts Access control	authentication via encrypted signatures	LDAP bind authentication	no Can implement custom security layer via applications	Users, roles and permissions, Role-Based Access Control (RBAC) supported
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More resources
	Amazon CloudSearch	Atos Standard Common Repository	FatDB	gStore
DB-Engines blog posts	Amazon - the rising star in the DBMS market 3 August 2015, Matthias Gelbmann The DB-Engines ranking includes now search engines 4 February 2013, Paul Andlinger show all
Recent citations in the news	Amazon CloudSearch – Start Searching in One Hour for Less Than $100 / Month | Amazon Web Services 12 April 2012, AWS Blog Searching CloudTrail Logs Easily with Amazon CloudSearch | AWS Startups Blog 21 October 2014, AWS Blog AWS, Microsoft and Google should retire these cloud services 2 June 2020, TechTarget CloudSearch Update – Price Reduction, Hebrew & Japanese Support, Partitioning, CloudTrail | Amazon Web Services 19 November 2014, AWS Blog Serverless Reference Architectures with AWS Lambda 10 May 2016, All Things Distributed provided by Google News

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