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DBMS > EJDB vs. OpenMLDB

System Properties Comparison EJDB vs. OpenMLDB

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Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonOpenMLDB  Xexclude from comparison
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)An open-source machine learning database that provides a feature platform for training and inference
Primary database modelDocument storeTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.14
Rank#331  Overall
#46  Document stores
Score0.08
Rank#343  Overall
#30  Time Series DBMS
Websitegithub.com/­Softmotions/­ejdbopenmldb.ai
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdopenmldb.ai/­docs/­zh/­main
DeveloperSoftmotions4 Paradigm Inc.
Initial release20122020
Current release2024-2 February 2024
License infoCommercial or Open SourceOpen Source infoGPLv2Open Source
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCC++, Java, Scala
Server operating systemsserver-lessLinux
Data schemeschema-freeFixed schema
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.no
Secondary indexesnoyes
SQL infoSupport of SQLnoyes
APIs and other access methodsin-process shared libraryJDBC
SQLAlchemy
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
C++
Go
Java
Python
Scala
Server-side scripts infoStored proceduresnono
Triggersnono
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesnoneSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integrityno infotypically not needed, however similar functionality with collection joins possibleno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanono
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyes
Durability infoSupport for making data persistentyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlnofine grained access rights according to SQL-standard

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EJDBOpenMLDB
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