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DBMS > OpenQM vs. PouchDB vs. Riak KV vs. SWC-DB vs. XTDB

System Properties Comparison OpenQM vs. PouchDB vs. Riak KV vs. SWC-DB vs. XTDB

Editorial information provided by DB-Engines
NameOpenQM infoalso called QM  Xexclude from comparisonPouchDB  Xexclude from comparisonRiak KV  Xexclude from comparisonSWC-DB infoSuper Wide Column Database  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionQpenQM is a high-performance, self-tuning, multi-value DBMSJavaScript DBMS with an API inspired by CouchDBDistributed, fault tolerant key-value storeA high performance, scalable Wide Column DBMSA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelMultivalue DBMSDocument storeKey-value store infowith links between data sets and object tags for the creation of secondary indexesWide column storeDocument store
Secondary database modelsTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.27
Rank#298  Overall
#10  Multivalue DBMS
Score2.28
Rank#115  Overall
#21  Document stores
Score4.10
Rank#82  Overall
#9  Key-value stores
Score0.01
Rank#376  Overall
#13  Wide column stores
Score0.11
Rank#343  Overall
#46  Document stores
Websitewww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmpouchdb.comgithub.com/­kashirin-alex/­swc-db
www.swcdb.org
github.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationpouchdb.com/­guideswww.tiot.jp/­riak-docs/­riak/­kv/­latestwww.xtdb.com/­docs
DeveloperRocket Software, originally Martin PhillipsApache Software FoundationOpenSource, formerly Basho TechnologiesAlex KashirinJuxt Ltd.
Initial release19932012200920202019
Current release3.4-127.1.1, June 20193.2.0, December 20220.5, April 20211.19, September 2021
License infoCommercial or Open SourceOpen Source infoGPLv2, extended commercial license availableOpen SourceOpen Source infoApache version 2, commercial enterprise editionOpen Source infoGPL V3Open Source infoMIT License
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaScriptErlangC++Clojure
Server operating systemsAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
server-less, requires a JavaScript environment (browser, Node.js)Linux
OS X
LinuxAll OS with a Java 8 (and higher) VM
Linux
Data schemeyes infowith some exceptionsschema-freeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or datenonoyes, extensible-data-notation format
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.yesnononono
Secondary indexesyesyes infovia viewsrestrictedyes
SQL infoSupport of SQLnononoSQL-like query languagelimited SQL, making use of Apache Calcite
APIs and other access methodsHTTP REST infoonly for PouchDB Server
JavaScript API
HTTP API
Native Erlang Interface
Proprietary protocol
Thrift
HTTP REST
JDBC
Supported programming languages.Net
Basic
C
Java
Objective C
PHP
Python
JavaScriptC infounofficial client library
C#
C++ infounofficial client library
Clojure infounofficial client library
Dart infounofficial client library
Erlang
Go infounofficial client library
Groovy infounofficial client library
Haskell infounofficial client library
Java
JavaScript infounofficial client library
Lisp infounofficial client library
Perl infounofficial client library
PHP
Python
Ruby
Scala infounofficial client library
Smalltalk infounofficial client library
C++Clojure
Java
Server-side scripts infoStored proceduresyesView functions in JavaScriptErlangnono
Triggersyesyesyes infopre-commit hooks and post-commit hooksnono
Partitioning methods infoMethods for storing different data on different nodesyesSharding infowith a proxy-based framework, named couchdb-loungeSharding infono "single point of failure"Shardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesyesMulti-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
selectable replication factoryes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono infolinks between data sets can be storedno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnonoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyes infoby using IndexedDB, WebSQL or LevelDB as backendyesyesyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlAccess rights can be defined down to the item levelnoyes, using Riak Security

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More resources
OpenQM infoalso called QMPouchDBRiak KVSWC-DB infoSuper Wide Column DatabaseXTDB infoformerly named Crux
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