DBMS > Adabas vs. MySQL vs. OpenQM
System Properties Comparison Adabas vs. MySQL vs. OpenQM
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|Editorial information provided by DB-Engines|
|Name||Adabas denotes "adaptable data base" Xexclude from comparison||MySQL Xexclude from comparison||OpenQM also called QM Xexclude from comparison|
|Description||OLTP - DBMS for mainframes and Linux/Unix/Windows environments used typically together with the Natural programming platform||Widely used open source RDBMS||QpenQM is a high-performance, self-tuning, multi-value DBMS|
|Primary database model||Multivalue DBMS||Relational DBMS Key/Value like access via memcached API||Multivalue DBMS|
|Secondary database models||Document store|
|Developer||Software AG||Oracle since 2010, originally MySQL AB, then Sun||Martin Phillips|
|Current release||8.0.31, October 2022||3.4-12|
|License Commercial or Open Source||commercial||Open Source GPL version 2. Commercial licenses with extended functionallity are available||Open Source GPLv2, extended commercial license available|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||C and C++|
|Server operating systems||BS2000|
|Data scheme||yes||yes||yes with some exceptions|
|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.||no||yes||yes|
|SQL Support of SQL||yes with add-on product Adabas SQL Gateway||yes with proprietary extensions||no|
|APIs and other access methods||HTTP API with add-on software Adabas SOA Gateway|
SOAP-based API with add-on software Adabas SOA Gateway
Proprietary native API
|Supported programming languages||Natural||Ada|
|Server-side scripts Stored procedures||in Natural||yes proprietary syntax||yes|
|Partitioning methods Methods for storing different data on different nodes||yes, with additonal products like Adabas Cluster Services, Adabas Parallel Services, Adabas Vista||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric||yes|
|Replication methods Methods for redundantly storing data on multiple nodes||yes, with add-on product Event Replicator||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||no||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||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.||no||yes|
|User concepts Access control||only with OS-specific tools (e.g. IBM RACF, CA Top Secret)||Users with fine-grained authorization concept no user groups or roles||Access rights can be defined down to the item level|
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|Adabas denotes "adaptable data base"||MySQL||OpenQM also called QM|
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