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DBMS > CouchDB vs. DB2

System Properties Comparison CouchDB vs. DB2

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Editorial information provided by DB-Engines
NameCouchDB stands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparisonDB2  Xexclude from comparison
DescriptionA document store inspired by Lotus NotesCommon in IBM host environments, 2 different versions for host and Windows/Linux
DB-Engines Ranking measures the popularity of database management systems
Trend Chart
Rank22
Score25.80
Rank6
Score206.23
Websitecouchdb.apache.orgibm.com/­software/­data/­db2
Technical documentationwiki.apache.org/­couchdbwww.ibm.com/­support/­entry/­portal/­documentation/­software/­information_management
DeveloperApache Software Foundation Apache top-level project, originally developed by Damien Katz, a former Lotus Notes developerIBM
Initial release20051983 host version
LicenseOpen Source Apache version 2commercial free version is available
Database as a Service (DBaaS) Only available as a cloud servicenono
Implementation languageErlangC and C++
Server operating systemsAndroid
BSD
Linux
OS X
Solaris
Windows
Linux
Unix
Windows
z/OS
Database modelDocument storeRelational DBMS Since Version 10.5 support for JSON/BSON documents compatible with MongoDB
Data schemeschema-freeyes
Typing predefined data types such as float or datenoyes
Secondary indexesyes via viewsyes
SQLnoyes
APIs and other access methodsRESTful HTTP/JSON APIJSON style queries MongoDB compatible
XQuery
ADO.NET
JDBC
ODBC
Supported programming languagesC
C#
ColdFusion
Erlang
Haskell
Java
JavaScript
Lisp
Lua
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
Ruby
Smalltalk
C
C#
C++
Cobol
Fortran
Java
Perl
PHP
Python
Ruby
Visual Basic
Server-side scripts Stored proceduresView functions in JavaScriptyes
Triggersyesyes
Partitioning methods Methods for storing different data on different nodesSharding with a proxy-based framework, named couchdb-loungeSharding only with Windows/Unix/Linux Version
Replication methods Methods for redundantly storing data on multiple nodesMaster-master replication
Master-slave replication
yes with separate tools (MQ, InfoSphere)
MapReduceyesno
Consistency concepts Methods to ensure consistency in a distributed systemEventual Consistency
Foreign keys Referential integritynoyes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of datano atomic operations within a single document possibleACID
Concurrency Support for concurrent manipulation of datayes strategy: optimistic lockingyes
Durability Support for making data persistentyesyes
User concepts Access controlAccess rights for users can be defined per databasefine grained access rights according to SQL-standard
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More Resources
CouchDB stands for "Cluster Of Unreliable Commodity Hardware"DB2
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CouchDB 2.0 counters MongoDB with improved scaling
17 November 2014, InfoWorld

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