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DBMS > LMDB vs. OpenMLDB vs. OushuDB

System Properties Comparison LMDB vs. OpenMLDB vs. OushuDB

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Editorial information provided by DB-Engines
NameLMDB  Xexclude from comparisonOpenMLDB  Xexclude from comparisonOushuDB  Xexclude from comparison
DescriptionA high performant, light-weight, embedded key-value database libraryAn open-source machine learning database that provides a feature platform for training and inferenceA data warehouse powered by Apache HAWQ supporting descriptive analysis and advanced machine learning
Primary database modelKey-value storeTime Series DBMSRelational DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.09
Rank#121  Overall
#20  Key-value stores
Score0.10
Rank#359  Overall
#36  Time Series DBMS
Score0.10
Rank#355  Overall
#154  Relational DBMS
Websitewww.symas.com/­symas-embedded-database-lmdbopenmldb.aiwww.oushu.com/­product/­oushuDB
Technical documentationwww.lmdb.tech/­docopenmldb.ai/­docs/­zh/­mainwww.oushu.com/­documentation
DeveloperSymas4 Paradigm Inc.Oushu
Initial release20112020
Current release0.9.32, January 20242024-2 February 20244.0.1, August 2020
License infoCommercial or Open SourceOpen SourceOpen Sourcecommercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCC++, Java, Scala
Server operating systemsLinux
Unix
Windows
LinuxLinux
Data schemeschema-freeFixed schemayes
Typing infopredefined data types such as float or dateyesyes
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.nono
Secondary indexesnoyesyes
SQL infoSupport of SQLnoyesFull-featured ANSI SQL support
APIs and other access methodsJDBC
SQLAlchemy
JDBC
ODBC
Supported programming languages.Net
C
C++
Clojure
Go
Haskell
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Nim
Objective C
OCaml
Perl
PHP
Python
R
Ruby
Rust
Swift
Tcl
C++
Go
Java
Python
Scala
C
C++
Server-side scripts infoStored proceduresnonoyes
Triggersnonoyes
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioningyes
Replication methods infoMethods for redundantly storing data on multiple nodesnoneSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoHadoop integration
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlnofine grained access rights according to SQL-standardKerberos, SSL and role based access

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More resources
LMDBOpenMLDBOushuDB
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