DBMS > Citus vs. MySQL
System Properties Comparison Citus vs. MySQL
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|Editorial information provided by DB-Engines|
|Name||Citus Xexclude from comparison||MySQL Xexclude from comparison|
|Description||Scalable hybrid operational and analytics RDBMS for big data use cases based on PostgreSQL||Widely used open source RDBMS|
|Primary database model||Relational DBMS||Relational DBMS Key/Value like access via memcached API|
|Secondary database models||Document store||Document store|
|Developer||Oracle since 2010, originally MySQL AB, then Sun|
|Current release||8.1, December 2018||8.0.29, April 2022|
|License Commercial or Open Source||Open Source AGPL, commercial license also available||Open Source GPL version 2. Commercial licenses with extended functionallity are available|
|Cloud-based only Only available as a cloud service||no||no|
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|Implementation language||C||C and C++|
|Server operating systems||Linux||FreeBSD|
|Typing predefined data types such as float or date||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||yes|
|SQL Support of SQL||yes standard, with numerous extensions||yes with proprietary extensions|
|APIs and other access methods||ADO.NET|
native C library
streaming API for large objects
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 proprietary syntax|
|Partitioning methods Methods for storing different data on different nodes||Sharding||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication other methods possible by using 3rd party extensions||Multi-source replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes not for MyISAM storage engine|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID not for MyISAM storage engine|
|Concurrency Support for concurrent manipulation of data||yes||yes table locks or row locks depending on storage engine|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||Users with fine-grained authorization concept no user groups or roles|
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