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DBMS > OpenMLDB vs. SpaceTime vs. Titan

System Properties Comparison OpenMLDB vs. SpaceTime vs. Titan

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Editorial information provided by DB-Engines
NameOpenMLDB  Xexclude from comparisonSpaceTime  Xexclude from comparisonTitan  Xexclude from comparison
Titan has been decommisioned after the takeover by Datastax. It will be removed from the DB-Engines ranking. A fork has been open-sourced as JanusGraph.
DescriptionAn open-source machine learning database that provides a feature platform for training and inferenceSpaceTime is a spatio-temporal DBMS with a focus on performance.Titan is a Graph DBMS optimized for distributed clusters.
Primary database modelTime Series DBMSSpatial DBMSGraph DBMS
Secondary database modelsRelational DBMSRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.10
Rank#359  Overall
#36  Time Series DBMS
Score0.03
Rank#392  Overall
#8  Spatial DBMS
Websiteopenmldb.aiwww.mireo.com/­spacetimegithub.com/­thinkaurelius/­titan
Technical documentationopenmldb.ai/­docs/­zh/­maingithub.com/­thinkaurelius/­titan/­wiki
Developer4 Paradigm Inc.MireoAurelius, owned by DataStax
Initial release202020202012
Current release2024-2 February 2024
License infoCommercial or Open SourceOpen SourcecommercialOpen Source infoApache license, version 2.0
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++, Java, ScalaC++Java
Server operating systemsLinuxLinuxLinux
OS X
Unix
Windows
Data schemeFixed schemayesyes
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.nono
Secondary indexesyesnoyes
SQL infoSupport of SQLyesA subset of ANSI SQL is implementedno
APIs and other access methodsJDBC
SQLAlchemy
RESTful HTTP APIJava API
TinkerPop Blueprints
TinkerPop Frames
TinkerPop Gremlin
TinkerPop Rexster
Supported programming languagesC++
Go
Java
Python
Scala
C#
C++
Python
Clojure
Java
Python
Server-side scripts infoStored proceduresnonoyes
Triggersnonoyes
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningFixed-grid hypercubesyes infovia pluggable storage backends
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationReal-time block device replication (DRBD)yes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyes infovia Faunus, a graph analytics engine
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integritynonoyes infoRelationships in graph
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes infoSupports various storage backends: Cassandra, HBase, Berkeley DB, Akiban, Hazelcast
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlfine grained access rights according to SQL-standardyesUser authentification and security via Rexster Graph Server

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More resources
OpenMLDBSpaceTimeTitan
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