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DBMS > Firebase Realtime Database vs. HarperDB vs. LokiJS vs. MarkLogic vs. OpenQM

System Properties Comparison Firebase Realtime Database vs. HarperDB vs. LokiJS vs. MarkLogic vs. OpenQM

Editorial information provided by DB-Engines
NameFirebase Realtime Database  Xexclude from comparisonHarperDB  Xexclude from comparisonLokiJS  Xexclude from comparisonMarkLogic  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparison
DescriptionCloud-hosted realtime document store. iOS, Android, and JavaScript clients share one Realtime Database instance and automatically receive updates with the newest data.Ultra-low latency distributed database with an intuitive REST API supporting NoSQL and SQL (including joins). Deployment of functions and databases simultaneously with a consolidated node-level architecture.In-memory JavaScript DBMSOperational and transactional Enterprise NoSQL databaseQpenQM is a high-performance, self-tuning, multi-value DBMS
Primary database modelDocument storeDocument storeDocument storeDocument store
Native XML DBMS
RDF store infoas of version 7
Search engine
Multivalue DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score13.64
Rank#39  Overall
#6  Document stores
Score0.60
Rank#244  Overall
#38  Document stores
Score0.49
Rank#260  Overall
#42  Document stores
Score5.18
Rank#63  Overall
#11  Document stores
#1  Native XML DBMS
#1  RDF stores
#7  Search engines
Score0.34
Rank#284  Overall
#10  Multivalue DBMS
Websitefirebase.google.com/­products/­realtime-databasewww.harperdb.iogithub.com/­techfort/­LokiJSwww.marklogic.comwww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qm
Technical documentationfirebase.google.com/­docs/­databasedocs.harperdb.io/­docstechfort.github.io/­LokiJSdocs.marklogic.com
DeveloperGoogle infoacquired by Google 2014HarperDBMarkLogic Corp.Rocket Software, originally Martin Phillips
Initial release20122017201420011993
Current release3.1, August 202111.0, December 20223.4-12
License infoCommercial or Open Sourcecommercialcommercial infofree community edition availableOpen Sourcecommercial inforestricted free version is availableOpen Source infoGPLv2, extended commercial license available
Cloud-based only infoOnly available as a cloud serviceyesnononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageNode.jsJavaScriptC++
Server operating systemshostedLinux
OS X
server-less, requires a JavaScript environment (browser, Node.js)Linux
OS X
Windows
AIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
Data schemeschema-freedynamic schemaschema-freeschema-free infoSchema can be enforcedyes infowith some exceptions
Typing infopredefined data types such as float or dateyesyes infoJSON data typesnoyes
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.nononoyesyes
Secondary indexesyesyesyes infovia viewsyesyes
SQL infoSupport of SQLnoSQL-like data manipulation statementsnoyes infoSQL92no
APIs and other access methodsAndroid
iOS
JavaScript API
RESTful HTTP API
JDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
JavaScript APIJava API
Node.js Client API
ODBC
proprietary Optic API infoProprietary Query API, introduced with version 9
RESTful HTTP API
SPARQL
WebDAV
XDBC
XQuery
XSLT
Supported programming languagesJava
JavaScript
Objective-C
.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
JavaScriptC
C#
C++
Java
JavaScript (Node.js)
Perl
PHP
Python
Ruby
.Net
Basic
C
Java
Objective C
PHP
Python
Server-side scripts infoStored procedureslimited functionality with using 'rules'Custom Functions infosince release 3.1View functions in JavaScriptyes infovia XQuery or JavaScriptyes
TriggersCallbacks are triggered when data changesnoyesyesyes
Partitioning methods infoMethods for storing different data on different nodesA table resides as a whole on one (or more) nodes in a clusternoneShardingyes
Replication methods infoMethods for redundantly storing data on multiple nodesyes infothe nodes on which a table resides can be definednoneyesyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesyes infovia Hadoop Connector, HDFS Direct Access and in-database MapReduce jobsno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infoif the client is offline
Immediate Consistency infoif the client is online
Immediate ConsistencynoneImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesAtomic execution of specific operationsno infoatomic operations within a single collection possibleACID infocan act as a resource manager in an XA/JTA transactionACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyes, using LMDByes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.yesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes, with Range Indexes
User concepts infoAccess controlyes, based on authentication and database rulesAccess rights for users and rolesnoRole-based access control at the document and subdocument levelsAccess rights can be defined down to the item level

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More resources
Firebase Realtime DatabaseHarperDBLokiJSMarkLogicOpenQM infoalso called QM
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