DBMS > Derby vs. Microsoft Azure SQL Database vs. MySQL
System Properties Comparison Derby vs. Microsoft Azure SQL Database vs. MySQL
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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||Microsoft Azure SQL Database formerly SQL Azure Xexclude from comparison||MySQL Xexclude from comparison|
|Description||Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.||Database as a Service offering with high compatibility to Microsoft SQL Server||Widely used open source RDBMS|
|Primary database model||Relational DBMS||Relational DBMS||Relational DBMS Key/Value like access via memcached API|
|Secondary database models||Document store|
|Developer||Apache Software Foundation||Microsoft||Oracle since 2010, originally MySQL AB, then Sun|
|Current release||10.15.2.0, March 2020||V12||8.0.29, April 2022|
|License Commercial or Open Source||Open Source Apache version 2||commercial||Open Source GPL version 2. Commercial licenses with extended functionallity are available|
|Cloud-based only Only available as a cloud service||no||yes||no|
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|Implementation language||Java||C++||C and C++|
|Server operating systems||All OS with a Java VM||hosted||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||yes with proprietary extensions|
|APIs and other access methods||JDBC||ADO.NET|
Proprietary native API
|Supported programming languages||Java||.Net|
|Server-side scripts Stored procedures||Java Stored Procedures||Transact SQL||yes proprietary syntax|
|Partitioning methods Methods for storing different data on different nodes||none||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication||yes, with always 3 replicas available||Multi-source 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||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes||yes not for MyISAM storage engine|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID||ACID not for MyISAM storage engine|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes table locks or row locks depending on storage engine|
|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|
|User concepts Access control||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard||Users with fine-grained authorization concept no user groups or roles|
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|Derby often called Apache Derby, originally IBM Cloudscape; contained in the Java SDK as JavaDB||Microsoft Azure SQL Database formerly SQL Azure||MySQL|
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