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DBMS > Drizzle vs. Kdb+ vs. searchxml vs. TerarkDB vs. XTDB

System Properties Comparison Drizzle vs. Kdb+ vs. searchxml vs. TerarkDB vs. XTDB

Editorial information provided by DB-Engines
NameDrizzle  Xexclude from comparisonKdb+  Xexclude from comparisonsearchxml  Xexclude from comparisonTerarkDB  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
Drizzle has published its last release in September 2012. The open-source project is discontinued and Drizzle is excluded from the DB-Engines ranking.
DescriptionMySQL fork with a pluggable micro-kernel and with an emphasis of performance over compatibility.High performance Time Series DBMSDBMS for structured and unstructured content wrapped with an application serverA key-value store forked from RocksDB with advanced compression algorithms. It can be used standalone or as a storage engine for MySQL and MongoDBA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelRelational DBMSTime Series DBMSNative XML DBMS
Search engine
Key-value storeDocument store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.68
Rank#58  Overall
#2  Time Series DBMS
Score0.00
Rank#381  Overall
#7  Native XML DBMS
#24  Search engines
Score0.15
Rank#334  Overall
#48  Key-value stores
Score0.13
Rank#345  Overall
#48  Document stores
Websitekx.comwww.searchxml.net/­category/­productsgithub.com/­Terark/­terarkdbgithub.com/­xtdb/­xtdb
xtdb.com
Technical documentationcode.kx.comwww.searchxml.net/­support/­handoutsgithub.com/­Terark/­terarkdb/­wikixtdb.com/­docs
DeveloperDrizzle project, originally started by Brian AkerKx Systems, a division of First Derivatives plcinformationpartners gmbhTerarkJuxt Ltd.
Initial release20082000 infokdb was released 2000, kdb+ in 2003201520162019
Current release7.2.4, September 20123.6, May 20181.01.19, September 2021
License infoCommercial or Open SourceOpen Source infoGNU GPLcommercial infofree 32-bit versioncommercialcommercial inforestricted open source version availableOpen 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 languageC++qC++C++Clojure
Server operating systemsFreeBSD
Linux
OS X
Linux
OS X
Solaris
Windows
WindowsAll OS with a Java 8 (and higher) VM
Linux
Data schemeyesyesschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesyesyesnoyes, 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.yesyesnono
Secondary indexesyesyes infotable attribute 'grouped'yesnoyes
SQL infoSupport of SQLyes infowith proprietary extensionsSQL-like query language (q)nonolimited SQL, making use of Apache Calcite
APIs and other access methodsJDBCHTTP API
JDBC
Jupyter
Kafka
ODBC
WebSocket
RESTful HTTP API
WebDAV
XQuery
XSLT
C++ API
Java API
HTTP REST
JDBC
Supported programming languagesC
C++
Java
PHP
C
C#
C++
Go
J
Java
JavaScript
Lua
MatLab
Perl
PHP
Python
R
Scala
C++ infomost other programming languages supported via APIsC++
Java
Clojure
Java
Server-side scripts infoStored proceduresnouser defined functionsyes infoon the application servernono
Triggersno infohooks for callbacks inside the server can be used.yes infowith viewsnonono
Partitioning methods infoMethods for storing different data on different nodesShardinghorizontal partitioningnonenonenone
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
Source-replica replicationyes infosychronisation to multiple collectionsnoneyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono infosimilar paradigm used for internal processingnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnomultiple readers, single writernoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyesyesyes, 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.yesnoyes
User concepts infoAccess controlPluggable authentication mechanisms infoe.g. LDAP, HTTPrights management via user accountsDomain, group and role-based access control at the document level and for application servicesno

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More resources
DrizzleKdb+searchxmlTerarkDBXTDB infoformerly named Crux
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