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DBMS > OpenMLDB vs. Percona Server for MySQL vs. TerminusDB vs. VelocityDB

System Properties Comparison OpenMLDB vs. Percona Server for MySQL vs. TerminusDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameOpenMLDB  Xexclude from comparisonPercona Server for MySQL  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionAn open-source machine learning database that provides a feature platform for training and inferenceEnhanced drop-in replacement for MySQL based on XtraDB or TokuDB storage engines with improved performance and additional diagnostic and management features.Scalable Graph Database platform making enterprise data available by exploiting inferred entities and relationshipsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSRelational DBMSGraph DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsRelational DBMSDocument store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.02
Rank#367  Overall
#37  Time Series DBMS
Score2.03
Rank#122  Overall
#57  Relational DBMS
Score0.17
Rank#325  Overall
#29  Graph DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websiteopenmldb.aiwww.percona.com/­software/­mysql-database/­percona-serverterminusdb.comvelocitydb.com
Technical documentationopenmldb.ai/­docs/­zh/­mainwww.percona.com/­downloads/­Percona-Server-LATESTterminusdb.github.io/­terminusdb/­#velocitydb.com/­UserGuide
Developer4 Paradigm Inc.PerconaDataChemist Ltd.VelocityDB Inc
Initial release2020200820182011
Current release2024-2 February 20248.0.36-28, 202411.0.0, January 20237.x
License infoCommercial or Open SourceOpen SourceOpen Source infoGPL version 2Open Source infoGPL V3commercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++, Java, ScalaC and C++Prolog, RustC#
Server operating systemsLinuxLinuxLinuxAny that supports .NET
Data schemeFixed schemayesyesyes
Typing infopredefined data types such as float or dateyesyesyesyes
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.noyesnono
Secondary indexesyesyesyes
SQL infoSupport of SQLyesyesSQL-like query language (WOQL)no
APIs and other access methodsJDBC
SQLAlchemy
ADO.NET
JDBC
ODBC
OWL
RESTful HTTP API
WOQL (Web Object Query Language)
.Net
Supported programming languagesC++
Go
Java
Python
Scala
Ada
C
C#
C++
D
Eiffel
Erlang
Haskell
Java
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
JavaScript
Python
.Net
Server-side scripts infoStored proceduresnoyesyesno
TriggersnoyesyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningGraph PartitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationMulti-source replication
Source-replica replication
XtraDB Cluster
Journaling Streams
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyes infoin-memory journalingyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes
User concepts infoAccess controlfine grained access rights according to SQL-standardUsers with fine-grained authorization concept infono user groups or rolesRole-based access controlBased on Windows Authentication

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More resources
OpenMLDBPercona Server for MySQLTerminusDB infoformer name was DataChemistVelocityDB
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