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DBMS > LevelDB vs. OpenMLDB vs. OpenTSDB vs. YTsaurus

System Properties Comparison LevelDB vs. OpenMLDB vs. OpenTSDB vs. YTsaurus

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Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonOpenMLDB  Xexclude from comparisonOpenTSDB  Xexclude from comparisonYTsaurus  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesAn open-source machine learning database that provides a feature platform for training and inferenceScalable Time Series DBMS based on HBaseYTsaurus is an open source platform for distributed storage and processing.
Primary database modelKey-value storeTime Series DBMSTime Series DBMSDocument store
Key-value store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.33
Rank#111  Overall
#19  Key-value stores
Score0.11
Rank#339  Overall
#30  Time Series DBMS
Score1.59
Rank#140  Overall
#12  Time Series DBMS
Score0.15
Rank#323  Overall
#44  Document stores
#47  Key-value stores
Websitegithub.com/­google/­leveldbopenmldb.aiopentsdb.netytsaurus.tech
Technical documentationgithub.com/­google/­leveldb/­blob/­main/­doc/­index.mdopenmldb.ai/­docs/­zh/­mainopentsdb.net/­docs/­build/­html/­index.htmlytsaurus.tech/­docs/­en
DeveloperGoogle4 Paradigm Inc.currently maintained by Yahoo and other contributorsYandex
Initial release2011202020112023
Current release1.23, February 20212024-2 February 2024
License infoCommercial or Open SourceOpen Source infoBSDOpen SourceOpen Source infoLGPLOpen Source infoApache License, Version 2.0
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++C++, Java, ScalaJavaC++
Server operating systemsIllumos
Linux
OS X
Windows
LinuxLinux
Windows
Ubuntu
Data schemeschema-freeFixed schemaschema-free
Typing infopredefined data types such as float or datenoyesnumeric data for metrics, strings for tagsyes
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.nononono
Secondary indexesnoyesno
SQL infoSupport of SQLnoyesnoYQL, an SQL-based language, is supported
APIs and other access methodsJDBC
SQLAlchemy
HTTP API
Telnet API
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
C++
Go
Java
Python
Scala
Erlang
Go
Java
Python
R
Ruby
C++
Go
Java
JavaScript
Python
Server-side scripts infoStored proceduresnonono
Triggersnonono
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioningSharding infobased on HBaseSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneSource-replica replicationselectable replication factor infobased on HBaseyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency infobased on HBase
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanononoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlnofine grained access rights according to SQL-standardnoAccess Control Lists

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More resources
LevelDBOpenMLDBOpenTSDBYTsaurus
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