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DBMS > CouchDB vs. Firebase Realtime Database vs. Impala vs. MySQL vs. Nebula Graph

System Properties Comparison CouchDB vs. Firebase Realtime Database vs. Impala vs. MySQL vs. Nebula Graph

Editorial information provided by DB-Engines
NameCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparisonFirebase Realtime Database  Xexclude from comparisonImpala  Xexclude from comparisonMySQL  Xexclude from comparisonNebula Graph  Xexclude from comparison
DescriptionA native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.Cloud-hosted realtime document store. iOS, Android, and JavaScript clients share one Realtime Database instance and automatically receive updates with the newest data.Analytic DBMS for HadoopWidely used open source RDBMSA distributed, linear scalable, high perfomant Graph DBMS
Primary database modelDocument storeDocument storeRelational DBMSRelational DBMS infoKey/Value like access via memcached APIGraph DBMS
Secondary database modelsSpatial DBMS infousing the Geocouch extensionDocument storeDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score15.47
Rank#40  Overall
#6  Document stores
Score18.02
Rank#38  Overall
#5  Document stores
Score18.65
Rank#37  Overall
#23  Relational DBMS
Score1212.52
Rank#2  Overall
#2  Relational DBMS
Score1.10
Rank#168  Overall
#15  Graph DBMS
Websitecouchdb.apache.orgfirebase.google.com/­products/­realtime-databasewww.cloudera.com/­products/­open-source/­apache-hadoop/­impala.htmlwww.mysql.comgithub.com/­vesoft-inc/­nebula
nebula-graph.io
Technical documentationdocs.couchdb.org/­en/­stablefirebase.google.com/­docs/­databasedocs.cloudera.com/­documentation/­enterprise/­latest/­topics/­impala.htmldev.mysql.com/­docdocs.nebula-graph.io
DeveloperApache Software Foundation infoApache top-level project, originally developed by Damien Katz, a former Lotus Notes developerGoogle infoacquired by Google 2014ClouderaOracle infosince 2010, originally MySQL AB, then SunVesoft Inc.
Initial release20052012201319952019
Current release3.1.1, September 20203.4.0, April 20208.0.26, July 2021
License infoCommercial or Open SourceOpen Source infoApache version 2commercialOpen Source infoApache Version 2Open Source infoGPL version 2. Commercial licenses with extended functionallity are availableOpen Source infoApache Version 2.0 + Common Clause 1.0
Cloud-based only infoOnly available as a cloud servicenoyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
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Implementation languageErlangC++C and C++C++
Server operating systemsAndroid
BSD
Linux
OS X
Solaris
Windows
hostedLinuxFreeBSD
Linux
OS X
Solaris
Windows
Linux
Data schemeschema-freeschema-freeyesyesStrong typed schema
Typing infopredefined data types such as float or datenoyesyesyesyes
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.nononoyesno
Secondary indexesyes infovia viewsyesyesyesyes infoNebula Graph internally uses the Key-Value store RocksDB for persistency. The vertices, edges, and their properties are stored as Key while their values are stored as Value. The primary indexes are per Key and secondary indexes are per Value.
SQL infoSupport of SQLnonoSQL-like DML and DDL statementsyes infowith proprietary extensionsSQL-like query language
APIs and other access methodsRESTful HTTP/JSON APIAndroid
iOS
JavaScript API
RESTful HTTP API
JDBC
ODBC
ADO.NET
JDBC
ODBC
Proprietary native API
Browser interface
console (shell)
Proprietary native API
Query language nGQL
Supported programming languagesC
C#
ColdFusion
Erlang
Haskell
Java
JavaScript
Lisp
Lua
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
Ruby
Smalltalk
Java
JavaScript
Objective-C
All languages supporting JDBC/ODBCAda
C
C#
C++
D
Delphi
Eiffel
Erlang
Haskell
Java
JavaScript (Node.js)
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
C++
Go
Java
Python
Server-side scripts infoStored proceduresView functions in JavaScriptlimited functionality with using 'rules'yes infouser defined functions and integration of map-reduceyes infoproprietary syntax
TriggersyesCallbacks are triggered when data changesnoyes
Partitioning methods infoMethods for storing different data on different nodesSharding infoimproved architecture with release 2.0Shardinghorizontal partitioning, sharding with MySQL Cluster or MySQL FabricSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
selectable replication factorMulti-source replication
Source-replica replication
Causal Clustering using Raft protocol
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnoyes infoquery execution via MapReducenono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyEventual Consistency infoif the client is offline
Immediate Consistency infoif the client is online
Eventual ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyes infonot for MyISAM storage engineyes infoRelationships in graphs
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single document possibleyesnoACID infonot for MyISAM storage engineACID
Concurrency infoSupport for concurrent manipulation of datayes infostrategy: optimistic lockingyesyesyes infotable locks or row locks depending on storage engineyes
Durability infoSupport for making data persistentyesyesyesyesyes infousing RocksDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyesyes
User concepts infoAccess controlAccess rights for users can be defined per databaseyes, based on authentication and database rulesAccess rights for users, groups and roles infobased on Apache Sentry and KerberosUsers with fine-grained authorization concept infono user groups or rolesRole-based access control
More information provided by the system vendor
CouchDB infostands for "Cluster Of Unreliable Commodity Hardware"Firebase Realtime DatabaseImpalaMySQLNebula Graph
Specific characteristicsNebula Graph is a truly distributed, linearly scalable, lightning-fast graph database,...
» more
Competitive advantagesNebula Graph boasts the world's only graph database solution that is able to host...
» more
Typical application scenariosSocial networking Fraud detection Knowledge graph Data warehouse management Anti...
» more
Key customersCurrently we have some top internet companies in China implementing Nebula Graph...
» more
Market metricsAt our very early stage, Nebula Graph has already received 3.5k stars and thousands...
» more
Licensing and pricing modelsNebula Graph is open source and free to use under Apache 2.0 license and Common Clause...
» more
News

Ecosystem Tools: Nebula Graph Dashboard for Monitoring
22 September 2021

Nebula Graph Source Code Explained: RBO
14 September 2021

Game Pocket Monsters with Nebula Graph
3 September 2021

Nebula Graph Source Code Explained: Validator
20 August 2021

Nebula Graph Source Code Explained: An Overview
13 August 2021

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CouchDB infostands for "Cluster Of Unreliable Commodity Hardware"Firebase Realtime DatabaseImpalaMySQLNebula Graph
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