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DBMS > Datomic vs. LokiJS vs. NSDb vs. RethinkDB vs. SQL.JS

System Properties Comparison Datomic vs. LokiJS vs. NSDb vs. RethinkDB vs. SQL.JS

Editorial information provided by DB-Engines
NameDatomic  Xexclude from comparisonLokiJS  Xexclude from comparisonNSDb  Xexclude from comparisonRethinkDB  Xexclude from comparisonSQL.JS  Xexclude from comparison
DescriptionDatomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durabilityIn-memory JavaScript DBMSScalable, High-performance Time Series DBMS designed for Real-time Analytics on top of KubernetesDBMS for the Web with a mechanism to push updated query results to applications in realtime.Port of SQLite to JavaScript
Primary database modelRelational DBMSDocument storeTime Series DBMSDocument storeRelational DBMS
Secondary database modelsSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.76
Rank#145  Overall
#66  Relational DBMS
Score0.48
Rank#262  Overall
#42  Document stores
Score0.00
Rank#396  Overall
#42  Time Series DBMS
Score2.84
Rank#106  Overall
#19  Document stores
Score0.57
Rank#248  Overall
#114  Relational DBMS
Websitewww.datomic.comgithub.com/­techfort/­LokiJSnsdb.iorethinkdb.comsql.js.org
Technical documentationdocs.datomic.comtechfort.github.io/­LokiJSnsdb.io/­Architecturerethinkdb.com/­docssql.js.org/­documentation/­index.html
DeveloperCognitectThe Linux Foundation infosince July 2017Alon Zakai infoenhancements implemented by others
Initial release20122014201720092012
Current release1.0.6735, June 20232.4.1, August 2020
License infoCommercial or Open Sourcecommercial infolimited edition freeOpen SourceOpen Source infoApache Version 2.0Open Source infoApache Version 2Open Source
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJava, ClojureJavaScriptJava, ScalaC++JavaScript
Server operating systemsAll OS with a Java VMserver-less, requires a JavaScript environment (browser, Node.js)Linux
macOS
Linux
OS X
Windows
server-less, requires a JavaScript environment (browser, Node.js)
Data schemeyesschema-freeschema-freeyes
Typing infopredefined data types such as float or dateyesnoyes: int, bigint, decimal, stringyes infostring, binary, float, bool, date, geometryyes
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.nonononono
Secondary indexesyesyes infovia viewsall fields are automatically indexedyes
SQL infoSupport of SQLnonoSQL-like query languagenoyes infoSQL-92 is not fully supported
APIs and other access methodsRESTful HTTP APIJavaScript APIgRPC
HTTP REST
WebSocket
JavaScript API
Supported programming languagesClojure
Java
JavaScriptJava
Scala
C infocommunity-supported driver
C# infocommunity-supported driver
C++ infocommunity-supported driver
Clojure infocommunity-supported driver
Dart infocommunity-supported driver
Erlang infocommunity-supported driver
Go infocommunity-supported driver
Haskell infocommunity-supported driver
Java infoofficial driver
JavaScript (Node.js) infoofficial driver
Lisp infocommunity-supported driver
Lua infocommunity-supported driver
Objective-C infocommunity-supported driver
Perl infocommunity-supported driver
PHP infocommunity-supported driver
Python infoofficial driver
Ruby infoofficial driver
Scala infocommunity-supported driver
JavaScript
Server-side scripts infoStored proceduresyes infoTransaction FunctionsView functions in JavaScriptnono
TriggersBy using transaction functionsyesClient-side triggers through changefeedsno
Partitioning methods infoMethods for storing different data on different nodesnone infoBut extensive use of caching in the application peersnoneShardingSharding inforange basednone
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoBut extensive use of caching in the application peersnoneSource-replica replicationnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencynoneEventual ConsistencyImmediate Consistencynone
Foreign keys infoReferential integritynonononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDno infoatomic operations within a single collection possiblenoAtomic single-document operationsACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes infoMVCC based
Durability infoSupport for making data persistentyes infousing external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)yes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.Using Apache Luceneyesno infoexcept by serializing a db to a file
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes inforecommended only for testing and developmentyesnoyes
User concepts infoAccess controlnonoyes infousers and table-level permissionsno

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More resources
DatomicLokiJSNSDbRethinkDBSQL.JS
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