DBMS > Derby vs. MySQL vs. PostGIS
System Properties Comparison Derby vs. MySQL vs. PostGIS
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|Editorial information provided by DB-Engines|
|Name||Derby often called Apache Derby, originally IBM Cloudscape; contained in the Java SDK as JavaDB Xexclude from comparison||MySQL Xexclude from comparison||PostGIS Xexclude from comparison|
|Description||Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.||Widely used open source RDBMS||Spatial extension of PostgreSQL|
|Primary database model||Relational DBMS||Relational DBMS Key/Value like access via memcached API||Spatial DBMS|
|Secondary database models||Document store|
|Developer||Apache Software Foundation||Oracle since 2010, originally MySQL AB, then Sun|
|Current release||10.15.2.0, March 2020||8.0.29, April 2022||3.2.1, February 2022|
|License Commercial or Open Source||Open Source Apache version 2||Open Source GPL version 2. Commercial licenses with extended functionallity are available||Open Source GPL v2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||Java||C and C++||C|
|Server operating systems||All OS with a Java VM||FreeBSD|
|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||yes||yes|
|SQL Support of SQL||yes||yes with proprietary extensions||yes|
|APIs and other access methods||JDBC||ADO.NET|
Proprietary native API
|Supported programming languages||Java||Ada|
|Server-side scripts Stored procedures||Java Stored Procedures||yes proprietary syntax||user defined functions|
|Partitioning methods Methods for storing different data on different nodes||none||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric||yes based on PostgreSQL|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication||Multi-source replication|
|yes based on PostgreSQL|
|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||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes not for MyISAM storage engine||yes|
|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||yes table locks or row locks depending on storage engine||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.||yes||yes||no|
|User concepts Access control||fine grained access rights according to SQL-standard||Users with fine-grained authorization concept no user groups or roles||yes based on PostgreSQL|
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|Derby often called Apache Derby, originally IBM Cloudscape; contained in the Java SDK as JavaDB||MySQL||PostGIS|
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