DBMS > AlaSQL vs. MySQL vs. Postgres-XL
System Properties Comparison AlaSQL vs. MySQL vs. Postgres-XL
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|Editorial information provided by DB-Engines|
|Name||AlaSQL Xexclude from comparison||MySQL Xexclude from comparison||Postgres-XL Xexclude from comparison|
|Primary database model||Document store|
|Relational DBMS Key/Value like access via memcached API||Relational DBMS|
|Secondary database models||Document store|
|Developer||Andrey Gershun & Mathias R. Wulff||Oracle since 2010, originally MySQL AB, then Sun|
|Initial release||2014||1995||2014 since 2012, originally named StormDB|
|Current release||8.0.30, July 2022||10 R1, October 2018|
|License Commercial or Open Source||Open Source MIT-License||Open Source GPL version 2. Commercial licenses with extended functionallity are available||Open Source Mozilla public license|
|Cloud-based only Only available as a cloud service||no||no||no|
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|ScaleGrid for MySQL: Fully managed MySQL hosting On-Premises and on a wide variety of cloud providers. Easily deploy, monitor, provision, and scale your deployments in the cloud.|
|Typing predefined data types such as float or date||no||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.||no||yes||yes XML type, but no XML query functionality|
|SQL Support of SQL||Close to SQL99, but no user access control, stored procedures and host language bindings.||yes with proprietary extensions||yes distributed, parallel query execution|
Proprietary native API
native C library
streaming API for large objects
|Server-side scripts Stored procedures||no||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||horizontal partitioning|
|Replication methods Methods for redundantly storing data on multiple nodes||none||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||none||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||yes only for local storage and DOM-storage||ACID not for MyISAM storage engine||ACID MVCC|
|Concurrency Support for concurrent manipulation of data||yes table locks or row locks depending on storage engine||yes|
|Durability Support for making data persistent||yes by using IndexedDB, SQL.JS or proprietary FileStorage||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||no||Users with fine-grained authorization concept no user groups or roles||fine grained access rights according to SQL-standard|
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