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DBMS > OpenMLDB vs. RocksDB vs. SpaceTime

System Properties Comparison OpenMLDB vs. RocksDB vs. SpaceTime

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Editorial information provided by DB-Engines
NameOpenMLDB  Xexclude from comparisonRocksDB  Xexclude from comparisonSpaceTime  Xexclude from comparison
DescriptionAn open-source machine learning database that provides a feature platform for training and inferenceEmbeddable persistent key-value store optimized for fast storage (flash and RAM)SpaceTime is a spatio-temporal DBMS with a focus on performance.
Primary database modelTime Series DBMSKey-value storeSpatial DBMS
Secondary database modelsRelational DBMSRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.11
Rank#339  Overall
#30  Time Series DBMS
Score2.84
Rank#97  Overall
#16  Key-value stores
Score0.00
Rank#385  Overall
#7  Spatial DBMS
Websiteopenmldb.airocksdb.orgwww.mireo.com/­spacetime
Technical documentationopenmldb.ai/­docs/­zh/­maingithub.com/­facebook/­rocksdb/­wiki
Developer4 Paradigm Inc.Facebook, Inc.Mireo
Initial release202020132020
Current release2024-2 February 20249.4.0, June 2024
License infoCommercial or Open SourceOpen SourceOpen Source infoBSDcommercial
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++C++
Server operating systemsLinuxLinuxLinux
Data schemeFixed schemaschema-freeyes
Typing infopredefined data types such as float or dateyesnoyes
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 indexesyesnono
SQL infoSupport of SQLyesnoA subset of ANSI SQL is implemented
APIs and other access methodsJDBC
SQLAlchemy
C++ API
Java API
RESTful HTTP API
Supported programming languagesC++
Go
Java
Python
Scala
C
C++
Go
Java
Perl
Python
Ruby
C#
C++
Python
Server-side scripts infoStored proceduresnonono
Triggersnono
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioninghorizontal partitioningFixed-grid hypercubes
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationyesReal-time block device replication (DRBD)
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoyesno
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.yesyesno
User concepts infoAccess controlfine grained access rights according to SQL-standardnoyes

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More resources
OpenMLDBRocksDBSpaceTime
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