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DBMS > Kdb vs. MySQL vs. OpenSearch vs. UniData,UniVerse

System Properties Comparison Kdb vs. MySQL vs. OpenSearch vs. UniData,UniVerse

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Editorial information provided by DB-Engines
NameKdb  Xexclude from comparisonMySQL  Xexclude from comparisonOpenSearch  Xexclude from comparisonUniData,UniVerse  Xexclude from comparison
DescriptionHigh performance Time Series DBMSWidely used open source RDBMSA distributed, RESTful search and analytics engine forked from Elasticsearch and based on Apache LuceneMultiValue database and application server with SQL mapping layer and meta database capabilities
Primary database modelTime Series DBMS
Vector DBMS
Relational DBMS infoKey/Value like access via memcached APISearch engineMultivalue DBMS
Secondary database modelsRelational DBMSDocument store
Spatial DBMS
Vector DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.73
Rank#45  Overall
#2  Time Series DBMS
#1  Vector DBMS
Score1029.49
Rank#2  Overall
#2  Relational DBMS
Score16.31
Rank#36  Overall
#4  Search engines
Score2.25
Rank#112  Overall
#2  Multivalue DBMS
Websitekx.comwww.mysql.comgithub.com/­opensearch-project
opensearch.org
www.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-unidata
Technical documentationcode.kx.comdev.mysql.com/­docopensearch.org/­docs/­latestdocs.rocketsoftware.com/­bundle?cluster=true&labelkey=unidata&labelkey=prod_unidata
DeveloperKx Systems, a division of First Derivatives plcOracle infosince 2010, originally MySQL AB, then SunAmazon Web ServicesRocket Software
Initial release2000 infokdb was released 2000, kdb+ in 2003199520211985
Current release3.6, May 20189.0.0, July 20242.5.0, January 2023
License infoCommercial or Open Sourcecommercial infofree 32-bit versionOpen Source infoGPL version 2. Commercial licenses with extended functionallity are availableOpen Source infoApache Version 2.0commercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
STACKIT OpenSearch offers OpenSearch in a managed version in enterprise grade, 100% GDPR-compliant, for a wide range of applications like analytics, website search, offering scalability and fast data access.
Implementation languageqC and C++JavaC
Server operating systemsLinux
OS X
Solaris
Windows
FreeBSD
Linux
OS X
Solaris
Windows
All OS with a Java VMAIX
HP-UX
Linux
Solaris
Windows
Data schemeyesyesschema-free infoFlexible type definitions. Once a type is defined, it is persistentschema-free
Typing infopredefined data types such as float or dateyesyesyesoptional
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.yesyes
Secondary indexesyes infotable attribute 'grouped'yesyes infoAll search fields are automatically indexedyes
SQL infoSupport of SQLSQL-like query language (q)yes infowith proprietary extensionsSQL-like query languageyes
APIs and other access methodsHTTP API
JDBC
Jupyter
Kafka
ODBC
WebSocket
ADO.NET
JDBC
ODBC
Proprietary native API
Java API
RESTful HTTP/JSON API
Java API infoJPA
JDBC
ODBC
OLE DB
Proprietary protocol
RESTful HTTP API
SOAP-based API
Supported programming languagesC
C#
C++
Go
J
Java
JavaScript
Lua
MatLab
Perl
PHP
Python
R
Scala
Ada
C
C#
C++
D
Delphi
Eiffel
Erlang
Haskell
Java
JavaScript (Node.js)
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby infoElasticsearch client
.Net
Basic infoU2 Basic
C
Java
Server-side scripts infoStored proceduresuser defined functionsyes infoproprietary syntaxyesyes
Triggersyes infowith viewsyesyes infoby using the 'percolation' featureyes infoU2 Basic
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioninghorizontal partitioning, sharding with MySQL Cluster or MySQL FabricShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationMulti-source replication
Source-replica replication
yesSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsno infosimilar paradigm used for internal processingnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency infoSynchronous doc based replication. Get by ID may show delays up to 1 sec. Configurable write consistency: one, quorum, all
Foreign keys infoReferential integrityyesyes infonot for MyISAM storage enginenono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACID infonot for MyISAM storage enginenoACID infoconfigurable
Concurrency infoSupport for concurrent manipulation of datayesyes infotable locks or row locks depending on storage engineyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlrights management via user accountsUsers with fine-grained authorization concept infono user groups or rolesAccess rights according to SQL-standard and operating system based
More information provided by the system vendor
KdbMySQLOpenSearchUniData,UniVerse
Specific characteristicsIntegrated columnar database & programming system for streaming, real time and historical...
» more
OpenSearch is a highly scalable and extensible open-source software suite for search,...
» more
Competitive advantagesprovides seamless scalability; runs on industry standard server platforms; is top-ranked...
» more
Distributed as fully open source under Apache License, Version 2.0 (ALv2), OpenSearch...
» more
Typical application scenariostick database streaming sensor data massive intelligence applications oil and gas...
» more
The OpenSearch platform is used across a broad range of search , analytics, and observability...
» more
Key customersGoldman Sachs Morgan Stanley Merrill Lynch J.P. Morgan Deutsche Bank IEX Securities...
» more
Market metricskdb+ performance and reliability proven by our customers in critical infrastructure...
» more
Licensing and pricing modelsupon request
» more
The OpenSearch Project offers open source software licensed under Apache License...
» more

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More resources
KdbMySQLOpenSearchUniData,UniVerse
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