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DBMS > OpenMLDB vs. Oracle Coherence vs. searchxml vs. TerarkDB

System Properties Comparison OpenMLDB vs. Oracle Coherence vs. searchxml vs. TerarkDB

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Editorial information provided by DB-Engines
NameOpenMLDB  Xexclude from comparisonOracle Coherence  Xexclude from comparisonsearchxml  Xexclude from comparisonTerarkDB  Xexclude from comparison
DescriptionAn open-source machine learning database that provides a feature platform for training and inferenceOracles in-memory data grid solutionDBMS for structured and unstructured content wrapped with an application serverA key-value store forked from RocksDB with advanced compression algorithms. It can be used standalone or as a storage engine for MySQL and MongoDB
Primary database modelTime Series DBMSKey-value storeNative XML DBMS
Search engine
Key-value store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.02
Rank#367  Overall
#37  Time Series DBMS
Score1.92
Rank#130  Overall
#22  Key-value stores
Score0.00
Rank#383  Overall
#7  Native XML DBMS
#25  Search engines
Score0.00
Rank#383  Overall
#60  Key-value stores
Websiteopenmldb.aiwww.oracle.com/­java/­coherencewww.searchxml.net/­category/­productsgithub.com/­bytedance/­terarkdb
Technical documentationopenmldb.ai/­docs/­zh/­maindocs.oracle.com/­en/­middleware/­standalone/­coherencewww.searchxml.net/­support/­handoutsbytedance.larkoffice.com/­docs/­doccnZmYFqHBm06BbvYgjsHHcKc
Developer4 Paradigm Inc.Oracleinformationpartners gmbhByteDance, originally Terark
Initial release2020200720152016
Current release2024-2 February 202414.1, August 20231.0
License infoCommercial or Open SourceOpen Sourcecommercialcommercialcommercial inforestricted open source version available
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++, Java, ScalaJavaC++C++
Server operating systemsLinuxAll OS with a Java VMWindows
Data schemeFixed schemaschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesyesyesno
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.nonoyesno
Secondary indexesyesnoyesno
SQL infoSupport of SQLyesnonono
APIs and other access methodsJDBC
SQLAlchemy
JCache
JPA
RESTful HTTP API
RESTful HTTP API
WebDAV
XQuery
XSLT
C++ API
Java API
Supported programming languagesC++
Go
Java
Python
Scala
.Net
C++
Java
C++ infomost other programming languages supported via APIsC++
Java
Server-side scripts infoStored proceduresnonoyes infoon the application serverno
Triggersnoyes infoLive Eventsnono
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningShardingnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationyes, with selectable consistency levelyes infosychronisation to multiple collectionsnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoconfigurablemultiple readers, single writerno
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyes infooptionallyyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesnoyes
User concepts infoAccess controlfine grained access rights according to SQL-standardauthentification to access the cache via certificates or http basic authenticationDomain, group and role-based access control at the document level and for application servicesno

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More resources
OpenMLDBOracle CoherencesearchxmlTerarkDB
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