DBMS > Citus vs. IBM Db2 vs. Transbase
System Properties Comparison Citus vs. IBM Db2 vs. Transbase
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|Editorial information provided by DB-Engines|
|Name||Citus Xexclude from comparison||IBM Db2 formerly named DB2 or IBM Database 2 Xexclude from comparison||Transbase Xexclude from comparison|
|Description||Scalable hybrid operational and analytics RDBMS for big data use cases based on PostgreSQL||Common in IBM host environments, 2 different versions for host and Windows/Linux||A resource-optimized, high-performance, universally applicable RDBMS|
|Primary database model||Relational DBMS||Relational DBMS Since Version 10.5 support for JSON/BSON documents compatible with MongoDB||Relational DBMS|
|Secondary database models||Document store||Document store|
RDF store in Db2 LUW (Linux, Unix, Windows)
Spatial DBMS with Db2 Spatial Extender
|Developer||IBM||Transaction Software GmbH|
|Initial release||2010||1983 host version||1987|
|Current release||8.1, December 2018||12.1, October 2016||Transbase 8.3, 2022|
|License Commercial or Open Source||Open Source AGPL, commercial license also available||commercial free version is available||commercial free development license|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C||C and C++||C and C++|
|Server operating systems||Linux||AIX|
|Typing predefined data types such as float or date||yes||yes||yes|
|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 specific XML type available, but no XML query functionality||no|
|SQL Support of SQL||yes standard, with numerous extensions||yes||yes|
|APIs and other access methods||ADO.NET|
native C library
streaming API for large objects
JSON style queries MongoDB compatible
Proprietary native API
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||yes||yes|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding only with Windows/Unix/Linux Version|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication other methods possible by using 3rd party extensions||yes with separate tools (MQ, InfoSphere)||Source-replica replication|
|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||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID||yes|
|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||no|
|User concepts Access control||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard|
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|Citus||IBM Db2 formerly named DB2 or IBM Database 2||Transbase|
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