DBMS > Atos Standard Common Repository vs. IBM Cloudant vs. IBM Db2 Event Store vs. SiriDB

System Properties Comparison Atos Standard Common Repository vs. IBM Cloudant vs. IBM Db2 Event Store vs. SiriDB

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Editorial information provided by DB-Engines
Name	Atos Standard Common Repository  Xexclude from comparison	IBM Cloudant  Xexclude from comparison	IBM Db2 Event Store  Xexclude from comparison	SiriDB  Xexclude from comparison
	This system has been discontinued and will be removed from the DB-Engines ranking.
Description	Highly scalable database system, designed for managing session and subscriber data in modern mobile communication networks	Database as a Service offering based on Apache CouchDB	Distributed Event Store optimized for Internet of Things use cases	Open Source Time Series DBMS
Primary database model	Document store Key-value store	Document store	Event Store Time Series DBMS	Time Series DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart		Score 2.75 Rank #104   Overall #19   Document stores	Score 0.27 Rank #309   Overall #2   Event Stores #28   Time Series DBMS	Score 0.07 Rank #378   Overall #42   Time Series DBMS
Website	atos.net/en/convergence-creators/portfolio/standard-common-repository	www.ibm.com/­products/­cloudant	www.ibm.com/­products/­db2-event-store	siridb.com
Technical documentation		cloud.ibm.com/­docs/­Cloudant	www.ibm.com/­docs/­en/­db2-event-store	docs.siridb.com
Developer	Atos Convergence Creators	IBM, Apache Software Foundation IBM acquired Cloudant in February 2014	IBM	Cesbit
Initial release	2016	2010	2017	2017
Current release	1703		2.0
License Commercial or Open Source	commercial	commercial	commercial free developer edition available	Open Source MIT License
Cloud-based only Only available as a cloud service	no	yes	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	Java	Erlang	C and C++	C
Server operating systems	Linux	hosted	Linux Linux, macOS, Windows for the developer addition	Linux
Data scheme	Schema and schema-less with LDAP views	schema-free	yes	yes
Typing predefined data types such as float or date	optional	no	yes	yes Numeric data
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	no
Secondary indexes	yes	yes	no	yes
SQL Support of SQL	no	no	yes through the embedded Spark runtime	no
APIs and other access methods	LDAP	RESTful HTTP/JSON API	ADO.NET DB2 Connect JDBC ODBC RESTful HTTP API	HTTP API
Supported programming languages	All languages with LDAP bindings	C# Java JavaScript Objective-C PHP Ruby	C C# C++ Cobol Delphi Fortran Go Java JavaScript (Node.js) Perl PHP Python R Ruby Scala Visual Basic	C C++ Go Java JavaScript (Node.js) PHP Python R
Server-side scripts Stored procedures	no	View functions (Map-Reduce) in JavaScript	yes	no
Triggers	yes	yes	no	no
Partitioning methods Methods for storing different data on different nodes	Sharding cell division	Sharding	Sharding	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	yes	Multi-source replication Source-replica replication	Active-active shard replication	yes
MapReduce Offers an API for user-defined Map/Reduce methods		yes	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency or Eventual Consistency depending on configuration	Eventual Consistency	Eventual Consistency
Foreign keys Referential integrity	no	no	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	Atomic execution of specific operations	no atomic operations within a document possible	no	no
Concurrency Support for concurrent manipulation of data	yes	yes Optimistic locking	No - written data is immutable	yes
Durability Support for making data persistent	yes	yes	Yes - Synchronous writes to local disk combined with replication and asynchronous writes in parquet format to permanent shared storage	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes	no	yes	yes
User concepts Access control	LDAP bind authentication	Access rights for users can be defined per database	fine grained access rights according to SQL-standard	simple rights management via user accounts
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More resources
	Atos Standard Common Repository	IBM Cloudant	IBM Db2 Event Store	SiriDB
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