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DBMS > Couchbase vs. CrateDB vs. IBM Db2

System Properties Comparison Couchbase vs. CrateDB vs. IBM Db2

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Editorial information provided by DB-Engines
NameCouchbase infoOriginally called Membase  Xexclude from comparisonCrateDB  Xexclude from comparisonIBM Db2 infoformerly named DB2 or IBM Database 2  Xexclude from comparison
DescriptionA distributed document store with a powerful search engine and in-built operational and analytical capabilitiesDistributed Date Store based on LuceneCommon in IBM host environments, 2 different versions for host and Windows/Linux
Primary database modelDocument storeRelational DBMS
Search engine
Relational DBMS infoSince Version 10.5 support for JSON/BSON documents compatible with MongoDB
Secondary database modelsKey-value store infooriginating from the former Membase product and supporting the Memcached protocol
Spatial DBMS infousing the Geocouch extension
Document store
Time Series DBMS
Document store
RDF store infoin Db2 LUW (Linux, Unix, Windows)
Spatial DBMS infowith Db2 Spatial Extender
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score28.38
Rank#30  Overall
#5  Document stores
Score0.97
Rank#178  Overall
#86  Relational DBMS
#13  Search engines
Score160.32
Rank#7  Overall
#5  Relational DBMS
Websitewww.couchbase.comcrate.iowww.ibm.com/­analytics/­db2
Technical documentationdocs.couchbase.comcrate.io/­docswww.ibm.com/­support/­knowledgecenter/­SSEPGG
DeveloperCouchbase, Inc.CrateIBM
Initial release201120131983 infohost version
Current releaseServer: 7.0, July 2021; Mobile: 3, February 2022; Couchbase Capella, October 202112.1, October 2016
License infoCommercial or Open SourceOpen Source infoApache version 2; Commercial licenses also availableOpen Sourcecommercial infofree version is available
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Couchbase Capella: a fully managed database-as-a-service that eliminates database management efforts and reduces cost
Implementation languageC, C++, Go and ErlangJavaC and C++
Server operating systemsLinux
OS X
Windows
All OS with a Java 7 (and higher) VMAIX
HP-UX
Linux
Solaris
Windows
z/OS
Data schemeschema-freeFlexible Schema (defined schema, partial schema, schema free)yes
Typing infopredefined data types such as float or dateyes infoString, Boolean, Numberyesyes
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.no
Secondary indexesyesyesyes
SQL infoSupport of SQLDeclarative query language (N1QL) that extends ANSI SQL to JSON. First commercial implementation of SQL++.yes, but no triggers and constraintsyes
APIs and other access methodsNative language bindings for CRUD, Query, Search and Analytics APIsADO.NET infocommunity maintained client
JDBC
MQTT (Message Queue Telemetry Transport)
PostgreSQL wire protocol
Prometheus Remote Read/Write
RESTful HTTP API
ADO.NET
JDBC
JSON style queries infoMongoDB compatible
ODBC
XQuery
Supported programming languages.Net
C
Go
Java
JavaScript infoNode.js
PHP
Python
Ruby
Scala
Erlang
Go infocommunity maintained client
Java
JavaScript (Node.js) infocommunity maintained client
Perl infocommunity maintained client
PHP
Python
Ruby infocommunity maintained client
Scala infocommunity maintained client
C
C#
C++
Cobol
Delphi
Fortran
Java
Perl
PHP
Python
Ruby
Visual Basic
Server-side scripts infoStored proceduresFunctions and timers in JavaScriptuser defined functionsyes
Triggersyes infovia the TAP protocolnoyes
Partitioning methods infoMethods for storing different data on different nodesShardingShardingSharding infoonly with Windows/Unix/Linux Version
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication infoincluding cross data center replication
Source-replica replication
selectable replication factoryes infowith separate tools (MQ, InfoSphere)
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infoselectable on a per-operation basis
Eventual Consistency
Read Your Own Writes Consistency infofor primary key lookups
Foreign keys infoReferential integritynonoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDno infounique row identifiers can be used for implementing an optimistic concurrency control strategyACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
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.yes infoEphemeral bucketsno
User concepts infoAccess controlUser and Administrator separation with password-based and LDAP integrated Authenticationrights management via user accountsfine grained access rights according to SQL-standard
More information provided by the system vendor
Couchbase infoOriginally called MembaseCrateDBIBM Db2 infoformerly named DB2 or IBM Database 2
Specific characteristicsDeveloped as an alternative to traditionally inflexible relational databases, Couchbase...
» more
CrateDB is an open source distributed SQL database that spreads data and processing...
» more
Competitive advantagesCouchbase was architected with several differentiated capabilities: Shared-nothing,...
» more
CrateDB is typically used in operational analytics applications, particularly those...
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Typical application scenariosCustomer 360 for user profile, session store and data aggregation (Comcast, Equifax,...
» more
CrateDB is ideal for integrating and analyzing streams of data--often machine-generated--in...
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Key customersAmadeus, AT&T, BD (Becton, Dickinson and Company), Carrefour, Cisco, Comcast, Disney,...
» more
CrateDB customers include McAfee, Qualtrics , Nokia, NBC Golfnow , Digital Domain...
» more
Market metricsNamed a leader in the Forrester Wave™: Big Data NoSQL, Q1 2019 Over 10M downloads...
» more
The CrateDB open source project was started in 2014. CrateDB was the winner of TechCrunch...
» more
Licensing and pricing modelsThe Community Edition (CE) of Couchbase Server and Couchbase Mobile are available...
» more
CrateDB pricing CrateDB Community Edition is open source and free to use under the...
» more

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More resources
Couchbase infoOriginally called MembaseCrateDBIBM Db2 infoformerly named DB2 or IBM Database 2
DB-Engines blog posts

Couchbase climbs up the DB-Engines Ranking, increasing its popularity by 10% every month
2 June 2014, Matthias Gelbmann

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