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DBMS > CockroachDB vs. EventStoreDB vs. IBM Cloudant vs. Percona Server for MongoDB

System Properties Comparison CockroachDB vs. EventStoreDB vs. IBM Cloudant vs. Percona Server for MongoDB

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Editorial information provided by DB-Engines
NameCockroachDB  Xexclude from comparisonEventStoreDB  Xexclude from comparisonIBM Cloudant  Xexclude from comparisonPercona Server for MongoDB  Xexclude from comparison
DescriptionCockroachDB is a distributed database architected for modern cloud applications. It is wire compatible with PostgreSQL and backed by a Key-Value Store, which is either RocksDB or a purpose-built derivative, called Pebble.Industrial-strength, open-source database solution built from the ground up for event sourcing.Database as a Service offering based on Apache CouchDBA drop-in replacement for MongoDB Community Edition with enterprise-grade features.
Primary database modelRelational DBMSEvent StoreDocument storeDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score6.15
Rank#55  Overall
#33  Relational DBMS
Score1.10
Rank#179  Overall
#1  Event Stores
Score2.68
Rank#106  Overall
#20  Document stores
Score0.52
Rank#254  Overall
#39  Document stores
Websitewww.cockroachlabs.comwww.eventstore.comwww.ibm.com/­products/­cloudantwww.percona.com/­mongodb/­software/­percona-server-for-mongodb
Technical documentationwww.cockroachlabs.com/­docsdevelopers.eventstore.comcloud.ibm.com/­docs/­Cloudantdocs.percona.com/­percona-distribution-for-mongodb
DeveloperCockroach LabsEvent Store LimitedIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Percona
Initial release2015201220102015
Current release23.1.1, May 202321.2, February 20213.4.10-2.10, November 2017
License infoCommercial or Open SourceOpen Source infoApache 2.0, commercial license availableOpen SourcecommercialOpen Source infoGPL Version 2
Cloud-based only infoOnly available as a cloud servicenonoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoErlangC++
Server operating systemsLinux
macOS
Windows
Linux
Windows
hostedLinux
Data schemedynamic schemaschema-freeschema-free
Typing infopredefined data types such as float or dateyesnoyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nonono
Secondary indexesyesyesyes
SQL infoSupport of SQLyes, wire compatible with PostgreSQLnono
APIs and other access methodsJDBCRESTful HTTP/JSON APIproprietary protocol using JSON
Supported programming languagesC#
C++
Clojure
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
Rust
C#
Java
JavaScript
Objective-C
PHP
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 infoStored proceduresnoView functions (Map-Reduce) in JavaScriptJavaScript
Triggersnoyesno
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioning (by key range) infoall tables are translated to an ordered KV store and then broken down into 64MB ranges, which are then used as replicas in RAFTShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication using RAFTMulti-source replication
Source-replica replication
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDno infoatomic operations within a document possibleno
Concurrency infoSupport for concurrent manipulation of datayesyes infoOptimistic lockingyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes infovia In-Memory Engine
User concepts infoAccess controlRole-based access controlAccess rights for users can be defined per databaseAccess rights for users and roles

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More resources
CockroachDBEventStoreDBIBM CloudantPercona Server for MongoDB
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