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DBMS > MonetDB vs. Postgres-XL vs. Tkrzw

System Properties Comparison MonetDB vs. Postgres-XL vs. Tkrzw

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Editorial information provided by DB-Engines
NameMonetDB  Xexclude from comparisonPostgres-XL  Xexclude from comparisonTkrzw infoSuccessor of Tokyo Cabinet and Kyoto Cabinet  Xexclude from comparison
DescriptionA relational database management system that stores data in columnsBased on PostgreSQL enhanced with MPP and write-scale-out cluster featuresA concept of libraries, allowing an application program to store and query key-value pairs in a file. Successor of Tokyo Cabinet and Kyoto Cabinet
Primary database modelRelational DBMSRelational DBMSKey-value store
Secondary database modelsDocument store
Spatial DBMS
Document store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.57
Rank#133  Overall
#66  Relational DBMS
Score0.91
Rank#242  Overall
#113  Relational DBMS
Score0.00
Rank#398  Overall
#66  Key-value stores
Websitewww.monetdb.orgwww.postgres-xl.orgdbmx.net/­tkrzw
Technical documentationwww.monetdb.org/­Documentationwww.postgres-xl.org/­documentation
DeveloperMonetDB BVMikio Hirabayashi
Initial release20042014 infosince 2012, originally named StormDB2020
Current releaseJul2021-SP2, July 202110 R1, October 20180.9.3, August 2020
License infoCommercial or Open SourceOpen Source infoMozilla Public License 2.0Open Source infoMozilla public licenseOpen Source infoApache Version 2.0
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCCC++
Server operating systemsFreeBSD
Linux
OS X
Solaris
Windows
Linux
macOS
Linux
macOS
Data schemeyesyesschema-free
Typing infopredefined data types such as float or dateyesyesno
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.yes infoXML type, but no XML query functionalityno
Secondary indexesyesyes
SQL infoSupport of SQLyes infoSQL 2003 with some extensionsyes infodistributed, parallel query executionno
APIs and other access methodsJDBC
native C library infoMAPI library (MonetDB application programming interface)
ODBC
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
Supported programming languagesC
C++
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
C++
Java
Python
Ruby
Server-side scripts infoStored proceduresyes, in SQL, C, Ruser defined functionsno
Triggersyesyesno
Partitioning methods infoMethods for storing different data on different nodesSharding via remote tableshorizontal partitioningnone
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoSource-replica replication available in experimental statusnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACID infoMVCC
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.noyes infousing specific database classes
User concepts infoAccess controlfine grained access rights according to SQL-standardfine grained access rights according to SQL-standardno

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More resources
MonetDBPostgres-XLTkrzw infoSuccessor of Tokyo Cabinet and Kyoto Cabinet
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