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|
|Name||MonetDB Xexclude from comparison||Postgres-XL Xexclude from comparison||Tkrzw Successor of Tokyo Cabinet and Kyoto Cabinet Xexclude from comparison|
|Description||A relational database management system that stores data in columns||Based on PostgreSQL enhanced with MPP and write-scale-out cluster features||A 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 model||Relational DBMS||Relational DBMS||Key-value store|
|Secondary database models||Document store|
|Developer||MonetDB BV||Mikio Hirabayashi|
|Initial release||2004||2014 since 2012, originally named StormDB||2020|
|Current release||Jul2021-SP2, July 2021||10 R1, October 2018||0.9.3, August 2020|
|License Commercial or Open Source||Open Source Mozilla Public License 2.0||Open Source Mozilla public license||Open Source Apache Version 2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||FreeBSD|
|Typing predefined data types such as float or date||yes||yes||no|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||yes XML type, but no XML query functionality||no|
|SQL Support of SQL||yes SQL 2003 with some extensions||yes distributed, parallel query execution||no|
|APIs and other access methods||JDBC|
native C library MAPI library (MonetDB application programming interface)
native C library
streaming API for large objects
|Supported programming languages||C|
|Server-side scripts Stored procedures||yes, in SQL, C, R||user defined functions||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding via remote tables||horizontal partitioning||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none Source-replica replication available in experimental status||none|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID MVCC|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes using specific database classes|
|User concepts Access control||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard||no|
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|MonetDB||Postgres-XL||Tkrzw Successor of Tokyo Cabinet and Kyoto Cabinet|
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