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DBMS > EventStoreDB vs. Graph Engine vs. OpenMLDB vs. TempoIQ

System Properties Comparison EventStoreDB vs. Graph Engine vs. OpenMLDB vs. TempoIQ

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Editorial information provided by DB-Engines
NameEventStoreDB  Xexclude from comparisonGraph Engine infoformer name: Trinity  Xexclude from comparisonOpenMLDB  Xexclude from comparisonTempoIQ infoformerly TempoDB  Xexclude from comparison
TempoIQ seems to be decommissioned. It will be removed from the DB-Engines ranking.
DescriptionIndustrial-strength, open-source database solution built from the ground up for event sourcing.A distributed in-memory data processing engine, underpinned by a strongly-typed RAM store and a general distributed computation engineAn open-source machine learning database that provides a feature platform for training and inferenceScalable analytics DBMS for sensor data, provided as a service (SaaS)
Primary database modelEvent StoreGraph DBMS
Key-value store
Time Series DBMSTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.19
Rank#173  Overall
#1  Event Stores
Score0.67
Rank#232  Overall
#21  Graph DBMS
#34  Key-value stores
Score0.10
Rank#359  Overall
#36  Time Series DBMS
Websitewww.eventstore.comwww.graphengine.ioopenmldb.aitempoiq.com (offline)
Technical documentationdevelopers.eventstore.comwww.graphengine.io/­docs/­manualopenmldb.ai/­docs/­zh/­main
DeveloperEvent Store LimitedMicrosoft4 Paradigm Inc.TempoIQ
Initial release2012201020202012
Current release21.2, February 20212024-2 February 2024
License infoCommercial or Open SourceOpen SourceOpen Source infoMIT LicenseOpen Sourcecommercial
Cloud-based only infoOnly available as a cloud servicenononoyes
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation language.NET and CC++, Java, Scala
Server operating systemsLinux
Windows
.NETLinux
Data schemeyesFixed schemaschema-free
Typing infopredefined data types such as float or dateyesyesyes
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.nonono
Secondary indexesyes
SQL infoSupport of SQLnoyesno
APIs and other access methodsRESTful HTTP APIJDBC
SQLAlchemy
HTTP API
Supported programming languagesC#
C++
F#
Visual Basic
C++
Go
Java
Python
Scala
C#
Java
JavaScript infoNode.js
Python
Ruby
Server-side scripts infoStored proceduresyesnono
Triggersnonoyes infoRealtime Alerts
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioninghorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesSource-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 integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonono
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentoptional: either by committing a write-ahead log (WAL) to the local persistent storage or by dumping the memory to a persistent storageyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno
User concepts infoAccess controlfine grained access rights according to SQL-standardsimple authentication-based access control

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More resources
EventStoreDBGraph Engine infoformer name: TrinityOpenMLDBTempoIQ infoformerly TempoDB
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