DBMS > EJDB vs. Percona Server for MongoDB vs. Transwarp KunDB vs. Transwarp StellarDB

System Properties Comparison EJDB vs. Percona Server for MongoDB vs. Transwarp KunDB vs. Transwarp StellarDB

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Editorial information provided by DB-Engines
Name	EJDB  Xexclude from comparison	Percona Server for MongoDB  Xexclude from comparison	Transwarp KunDB  Xexclude from comparison	Transwarp StellarDB  Xexclude from comparison
Description	Embeddable document-store database library with JSON representation of queries (in MongoDB style)	A drop-in replacement for MongoDB Community Edition with enterprise-grade features.	OLTP DBMS based on a distributed architecture and highly compatible with MySQL and Oracle	A distributed graph DBMS built for enterprise-level graph applications
Primary database model	Document store	Document store	Relational DBMS	Graph DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.31 Rank #296   Overall #44   Document stores	Score 0.60 Rank #246   Overall #39   Document stores	Score 0.14 Rank #341   Overall #149   Relational DBMS	Score 0.07 Rank #371   Overall #39   Graph DBMS
Website	github.com/­Softmotions/­ejdb	www.percona.com/­mongodb/­software/­percona-server-for-mongodb	www.transwarp.cn/­en/­product/­kundb	www.transwarp.cn/­en/­product/­stellardb
Technical documentation	github.com/­Softmotions/­ejdb/­blob/­master/­README.md	docs.percona.com/­percona-distribution-for-mongodb
Developer	Softmotions	Percona	Transwarp	Transwarp
Initial release	2012	2015
Current release		3.4.10-2.10, November 2017
License Commercial or Open Source	Open Source GPLv2	Open Source GPL Version 2	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	C	C++
Server operating systems	server-less	Linux
Data scheme	schema-free	schema-free	yes
Typing predefined data types such as float or date	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.		no
Secondary indexes	no	yes	yes
SQL Support of SQL	no	no	yes	SQL-like query language
APIs and other access methods	in-process shared library	proprietary protocol using JSON		OpenCypher
Supported programming languages	Actionscript C C# C++ Go Java JavaScript (Node.js) Lua Objective-C Pike Python Ruby	Actionscript C C# C++ Clojure ColdFusion D Dart Delphi Erlang Go Groovy Haskell Java JavaScript Lisp Lua MatLab Perl PHP PowerShell Prolog Python R Ruby Scala Smalltalk
Server-side scripts Stored procedures	no	JavaScript	yes
Triggers	no	no	yes
Partitioning methods Methods for storing different data on different nodes	none	Sharding	horizontal partitioning	horizontal partitioning
Replication methods Methods for redundantly storing data on multiple nodes	none	Source-replica replication
MapReduce Offers an API for user-defined Map/Reduce methods	no	yes	no
Consistency concepts Methods to ensure consistency in a distributed system		Eventual Consistency Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no typically not needed, however similar functionality with collection joins possible	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	no	ACID
Concurrency Support for concurrent manipulation of data	yes Read/Write Locking	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 via In-Memory Engine
User concepts Access control	no	Access rights for users and roles	yes	yes
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More resources
	EJDB	Percona Server for MongoDB	Transwarp KunDB	Transwarp StellarDB
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