DBMS > EDB Postgres vs. MySQL vs. XTDB
System Properties Comparison EDB Postgres vs. MySQL vs. XTDB
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|Editorial information provided by DB-Engines|
|Name||EDB Postgres Xexclude from comparison||MySQL Xexclude from comparison||XTDB formerly named Crux Xexclude from comparison|
|Description||The EDB Postgres Platform is an enterprise-class data management platform based on the open source database PostgreSQL with flexible deployment options and Oracle compatibility features, complemented by tool kits for management, integration, and migration.||Widely used open source RDBMS||A general purpose database with bitemporal SQL and Datalog and graph queries|
|Primary database model||Relational DBMS||Relational DBMS Key/Value like access via memcached API||Document store|
|Secondary database models||Document store|
|Developer||EnterpriseDB||Oracle since 2010, originally MySQL AB, then Sun||Juxt Ltd.|
|Current release||14, December 2021||8.1.0, July 2023||1.19, September 2021|
|License Commercial or Open Source||commercial BSD for PostgreSQL-components||Open Source GPL version 2. Commercial licenses with extended functionallity are available||Open Source MIT License|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||C||C and C++||Clojure|
|Server operating systems||Linux|
|All OS with a Java 8 (and higher) VM|
|Typing predefined data types such as float or date||yes||yes||yes, extensible-data-notation format|
|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||no|
|SQL Support of SQL||yes standard with numerous extensions||yes with proprietary extensions||limited SQL, making use of Apache Calcite|
|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||no|
|Partitioning methods Methods for storing different data on different nodes||horizontal partitioning by hash, list or range||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric||none|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication||Multi-source replication|
|yes, each node contains all data|
|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 not for MyISAM storage engine||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID not for MyISAM storage engine||ACID|
|Concurrency Support for concurrent manipulation of data||yes, multi-version concurrency control (MVCC)||yes table locks or row locks depending on storage engine||yes|
|Durability Support for making data persistent||yes||yes||yes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB|
|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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|EDB Postgres||MySQL||XTDB formerly named Crux|
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