DBMS > EJDB vs. Infobright vs. Postgres-XL
System Properties Comparison EJDB vs. Infobright vs. Postgres-XL
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|Editorial information provided by DB-Engines|
|Name||EJDB Xexclude from comparison||Infobright Xexclude from comparison||Postgres-XL Xexclude from comparison|
|Description||Embeddable document-store database library with JSON representation of queries (in MongoDB style)||High performant column-oriented DBMS for analytic workloads using MySQL or PostgreSQL as a frontend||Based on PostgreSQL enhanced with MPP and write-scale-out cluster features|
|Primary database model||Document store||Relational DBMS||Relational DBMS|
|Secondary database models||Document store|
|Developer||Softmotions||Ignite Technologies Inc.; formerly InfoBright Inc.|
|Initial release||2012||2005||2014 since 2012, originally named StormDB|
|Current release||10 R1, October 2018|
|License Commercial or Open Source||Open Source GPLv2||commercial The open source (GPLv2) version did not support inserts/updates/deletes and was discontinued with July 2016||Open Source Mozilla public license|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||server-less||Linux|
|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.||no||yes XML type, but no XML query functionality|
|Secondary indexes||no||no Knowledge Grid Technology used instead||yes|
|SQL Support of SQL||no||yes||yes distributed, parallel query execution|
|APIs and other access methods||in-process shared library||ADO.NET|
native C library
streaming API for large objects
|Supported programming languages||Actionscript|
|Server-side scripts Stored procedures||no||no||user defined functions|
|Partitioning methods Methods for storing different data on different nodes||none||none||horizontal partitioning|
|Replication methods Methods for redundantly storing data on multiple nodes||none||Source-replica 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|
|Foreign keys Referential integrity||no typically not needed, however similar functionality with collection joins possible||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||ACID MVCC|
|Concurrency Support for concurrent manipulation of data||yes Read/Write Locking||yes||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|
|User concepts Access control||no||fine grained access rights according to SQL-standard exploiting MySQL or PostgreSQL frontend capabilities||fine grained access rights according to SQL-standard|
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