DBMS > Atos Standard Common Repository vs. EJDB vs. InterSystems Caché vs. VelocityDB

System Properties Comparison Atos Standard Common Repository vs. EJDB vs. InterSystems Caché vs. VelocityDB

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Editorial information provided by DB-Engines
Name	Atos Standard Common Repository  Xexclude from comparison	EJDB  Xexclude from comparison	InterSystems Caché  Xexclude from comparison	VelocityDB  Xexclude from comparison
	This system has been discontinued and will be removed from the DB-Engines ranking.		Caché is a deprecated database engine which is substituted with InterSystems IRIS. It therefore is removed from the DB-Engines Ranking.
Description	Highly scalable database system, designed for managing session and subscriber data in modern mobile communication networks	Embeddable document-store database library with JSON representation of queries (in MongoDB style)	A multi-model DBMS and application server	A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database model	Document store Key-value store	Document store	Key-value store Object oriented DBMS Relational DBMS	Graph DBMS Object oriented DBMS
Secondary database models			Document store
DB-Engines Ranking measures the popularity of database management systems Trend Chart		Score 0.31 Rank #296   Overall #44   Document stores		Score 0.11 Rank #354   Overall #37   Graph DBMS #16   Object oriented DBMS
Website	atos.net/en/convergence-creators/portfolio/standard-common-repository	github.com/­Softmotions/­ejdb	www.intersystems.com/­products/­cache	velocitydb.com
Technical documentation		github.com/­Softmotions/­ejdb/­blob/­master/­README.md	docs.intersystems.com	velocitydb.com/­UserGuide
Developer	Atos Convergence Creators	Softmotions	InterSystems	VelocityDB Inc
Initial release	2016	2012	1997	2011
Current release	1703		2018.1.4, May 2020	7.x
License Commercial or Open Source	commercial	Open Source GPLv2	commercial	commercial
Cloud-based only Only available as a cloud service	no	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	Linux	server-less	AIX HP Open VMS HP-UX Linux OS X Solaris Windows	Any that supports .NET
Data scheme	Schema and schema-less with LDAP views	schema-free	depending on used data model	yes
Typing predefined data types such as float or date	optional	yes string, integer, double, bool, date, object_id	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		yes	no
Secondary indexes	yes	no	yes	yes
SQL Support of SQL	no	no	yes	no
APIs and other access methods	LDAP	in-process shared library	.NET Client API JDBC ODBC RESTful HTTP API	.Net
Supported programming languages	All languages with LDAP bindings	Actionscript C C# C++ Go Java JavaScript (Node.js) Lua Objective-C Pike Python Ruby	C# C++ Java	.Net
Server-side scripts Stored procedures	no	no	yes	no
Triggers	yes	no	yes	Callbacks are triggered when data changes
Partitioning methods Methods for storing different data on different nodes	Sharding cell division	none	none	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	yes	none	Source-replica replication
MapReduce Offers an API for user-defined Map/Reduce methods		no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency or Eventual Consistency depending on configuration		Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no typically not needed, however similar functionality with collection joins possible	yes	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	Atomic execution of specific operations	no	ACID	ACID
Concurrency Support for concurrent manipulation of data	yes	yes Read/Write 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.	yes		yes	yes
User concepts Access control	LDAP bind authentication	no	Access rights for users, groups and roles	Based on Windows Authentication
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More resources
	Atos Standard Common Repository	EJDB	InterSystems Caché	VelocityDB
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