DBMS > EJDB vs. MySQL vs. SAP Advantage Database Server
System Properties Comparison EJDB vs. MySQL vs. SAP Advantage Database Server
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|Editorial information provided by DB-Engines|
|Name||EJDB Xexclude from comparison||MySQL Xexclude from comparison||SAP Advantage Database Server former name: Sybase ADS Xexclude from comparison|
|Description||Embeddable document-store database library with JSON representation of queries (in MongoDB style)||Widely used open source RDBMS||Low-cost RDBMS with access to ISAM and FoxPro data structures|
|Primary database model||Document store||Relational DBMS Key/Value like access via memcached API||Relational DBMS|
|Secondary database models||Document store|
|Developer||Softmotions||Oracle since 2010, originally MySQL AB, then Sun||Sybase, SAP|
|Current release||8.0.29, April 2022|
|License Commercial or Open Source||Open Source GPLv2||Open Source GPL version 2. Commercial licenses with extended functionallity are available||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C||C and C++|
|Server operating systems||server-less||FreeBSD|
|Typing predefined data types such as float or date||yes string, integer, double, bool, date, object_id||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||no|
|SQL Support of SQL||no||yes with proprietary extensions||yes|
|APIs and other access methods||in-process shared library||ADO.NET|
Proprietary native API
|.NET Client API|
|Supported programming languages||Actionscript|
|Server-side scripts Stored procedures||no||yes proprietary syntax||yes|
|Partitioning methods Methods for storing different data on different nodes||none||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none||Multi-source replication|
|Multi-source replication CONFLICT Trigger to resolve replication conflicts|
|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||no typically not needed, however similar functionality with collection joins possible||yes not for MyISAM storage engine||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID not for MyISAM storage engine||ACID|
|Concurrency Support for concurrent manipulation of data||yes Read/Write Locking||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||no caching of (temporary) tables can be configured|
|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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|EJDB||MySQL||SAP Advantage Database Server former name: Sybase ADS|
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