DB-EnginesExtremeDB: the first and only COTS deterministic embedded database management system for mission- and safety-critical hard real-time applicationsEnglish
Deutsch
Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

DBMS > CouchDB vs. etcd vs. EXASOL vs. eXtremeDB

System Properties Comparison CouchDB vs. etcd vs. EXASOL vs. eXtremeDB

Please select another system to include it in the comparison.

Editorial information provided by DB-Engines
NameCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparisonetcd  Xexclude from comparisonEXASOL  Xexclude from comparisoneXtremeDB  Xexclude from comparison
DescriptionA native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.A distributed reliable key-value storeHigh-performance, in-memory, MPP database specifically designed for in-memory analytics.Natively in-memory DBMS with options for persistency, high-availability and clustering
Primary database modelDocument storeKey-value storeRelational DBMSRelational DBMS
Time Series DBMS
Secondary database modelsSpatial DBMS infousing the Geocouch extension
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score15.79
Rank#40  Overall
#6  Document stores
Score10.19
Rank#46  Overall
#5  Key-value stores
Score3.81
Rank#88  Overall
#47  Relational DBMS
Score0.69
Rank#211  Overall
#105  Relational DBMS
#15  Time Series DBMS
Websitecouchdb.apache.orgetcd.io
github.com/­etcd-io/­etcd
www.exasol.comwww.mcobject.com
Technical documentationdocs.couchdb.org/­en/­stableetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
www.exasol.com/­resourceswww.mcobject.com/­docs/­extremedb.htm
DeveloperApache Software Foundation infoApache top-level project, originally developed by Damien Katz, a former Lotus Notes developerExasolMcObject
Initial release200520002001
Current release3.1.1, September 20203.4, August 20198.2, November 2020
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoApache Version 2.0commercialcommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageErlangGoC and C++
Server operating systemsAndroid
BSD
Linux
OS X
Solaris
Windows
FreeBSD
Linux
Windows infoexperimental
AIX
HP-UX
Linux
macOS
Solaris
Windows
Data schemeschema-freeschema-freeyesyes
Typing infopredefined data types such as float or datenonoyesyes
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 infosupport of XML interfaces available
Secondary indexesyes infovia viewsnoyesyes
SQL infoSupport of SQLnonoyesyes infowith the option: eXtremeSQL
APIs and other access methodsRESTful HTTP/JSON APIgRPC
JSON over HTTP
.Net
JDBC
ODBC
WebSocket
.NET Client API
JDBC
JNI
ODBC
Proprietary protocol
RESTful HTTP API
Supported programming languagesC
C#
ColdFusion
Erlang
Haskell
Java
JavaScript
Lisp
Lua
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
Ruby
Smalltalk
.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
Java
Lua
Python
R
.Net
C
C#
C++
Java
Lua
Python
Scala
Server-side scripts infoStored proceduresView functions in JavaScriptnouser defined functionsyes
Triggersyesyes, watching key changesyesyes infoby defining events
Partitioning methods infoMethods for storing different data on different nodesSharding infoimproved architecture with release 2.0Shardinghorizontal partitioning / sharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.Active Replication Fabric™ for IoT
Multi-source replication infoby means of eXtremeDB Cluster option
Source-replica replication infoby means of eXtremeDB High Availability option
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnoyes infoHadoop integrationno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonoyesyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single document possiblenoACIDACID
Concurrency infoSupport for concurrent manipulation of datayes infostrategy: optimistic lockingyesyesyes infoOptimistic (MVCC) and pessimistic (locking) strategies available
Durability infoSupport for making data persistentyesyesyesyes
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 databasenoAccess rights for users, groups and roles according to SQL-standard
More information provided by the system vendor
CouchDB infostands for "Cluster Of Unreliable Commodity Hardware"etcdEXASOLeXtremeDB
Specific characteristicseXtremeDB is an in-memory and/or persistent database system that offers an ultra-small...
» more
Competitive advantageseXtremeDB databases can be modeled relationally or as objects and can utilize SQL...
» more
Typical application scenariosIoT application across all markets: Industrial Control, Netcom, Telecom, Defense,...
» more
Key customersSchneider Electronics, F5 Networks, TNS, Boeing, Northrop Grumman, GoPro, ViaSat,...
» more
Market metricsWith hundreds of customers and over 30 million devices/applications using the product...
» more
Licensing and pricing modelsFor server use cases, there is a simple per-server license irrespective of the number...
» more

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services

We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources
CouchDB infostands for "Cluster Of Unreliable Commodity Hardware"etcdEXASOLeXtremeDB
DB-Engines blog posts

Couchbase climbs up the DB-Engines Ranking, increasing its popularity by 10% every month
2 June 2014, Matthias Gelbmann

show all

Recent citations in the news

DeFi Deep Dive — Covalent, Blockchain Data Unifier
17 October 2021, BeInCrypto

How to Connect Your Flask App With CouchDB: A NoSQL Database
14 August 2021, MakeUseOf

Apache CouchDB 3.0 NoSQL Database: A Major Milestone -- ADTmag
27 February 2020, ADT Magazine

CouchDB 3.0 ends admin party era • DEVCLASS
27 February 2020, DevClass

How to create your first CouchDB database with Fauxton
8 May 2019, TechRepublic

provided by Google News

All about performance: etcd 3.5 looks to make Kubernetes users happy • DEVCLASS
17 June 2021, DevClass

Common Kubernetes terminology you should know
8 October 2021, TechTarget

Cloud Native Computing Foundation Announces Agenda for KubeCon + CloudNativeCon + Open Source Summit China Virtual 2021
28 September 2021, Yahoo Finance

Distributed Key-Value Store etcd Graduates at CNCF
29 November 2020, InfoQ.com

European railways announce ticketing roadmap
11 October 2021, International Railway Journal

provided by Google News

Sponsored post: How to make your CDO hire a success
4 October 2021, TechCrunch

Exasol : remains undefeated against its competitors in its peer groups in BARC's The Data Management Survey 22
23 September 2021, Marketscreener.com

Exasol Achieves Carbon Neutrality for 2020 and Commits to a 42% Reduction in Emissions by 2030
30 September 2021, Yahoo Finance

PRESS RELEASE : EXASOL AG Announces Changes to its Leadership Structure
15 October 2021, marketscreener.com

Half of Active CDOs Say Organizations' Expectations of the CDO Role Are Misinformed
22 September 2021, Business Wire

provided by Google News

McObject Announces Immediate Availability of eXtremeDB/rt for DDC-I’s Deos Real-Time Operating System
30 September 2021, EIN News

McObject Collaborates with Wind River to Deliver First-Ever
14 September 2021, GlobeNewswire

“Above the Trend Line” – Your Industry Rumor Central for 9/24/2021
24 September 2021, insideBIGDATA

It's simple to grow, adapt and innovate when you start with the best in-memory database
25 February 2021, GlobeNewswire

Beta tests for real time in-memory embedded database
4 May 2021, eeNews Europe

provided by Google News

Job opportunities

Erlang Developer
2600Hz, Henderson, NV

Engineering Manager
Shipt, Birmingham, AL

Engineering Manager - Studio Team
LiveControl, Remote

Lead Software Engineer (Remote)
Cvent, Delaware

PHP Developer
Mindfire Technology, Layton, UT

Platform Engineer – SysAdmin
Grant Street Group, Remote

Backend Developer
Cyberhaven, Remote

Agriculture and Education Coordinator - Chugiak, Alaska - Native Village of Eklutna
Alaska Native Tribal Health Consortium, Chugiak, AK

Software Engineering Co-Op
Red Hat Software, Remote

Junior Developer
Paradyme Management, Washington, DC

Data Engineer
CVS Health, New York, NY

DevOps Engineer
CVS Health, Chicago, IL

Site Reliability Engineering: DevOps & Automation
Aera Technology, Austin, TX

Data Engineer (Santa Monica)
Seriously Digital Entertainment, Santa Monica, CA

Data Scientist
A10Clinical, Duluth, GA

WPF Sr. Engineer
LT Technology Services, Santa Clara, CA

jobs by Indeed



Share this page

Featured Products

Datastax Astra logo

Build cloud-native apps fast with Astra, the open-source, multi-cloud stack for
modern data apps.
Get started with 5 GB free..

Neo4j logo

See for yourself how a graph database can make your life easier.
Use Neo4j online for free.

MariaDB logo

SkySQL, the ultimate
MariaDB cloud, is here.

Get started with SkySQL today!

Vertica logo

The fastest unified analytical warehouse at extreme scale with in-database machine learning. Try Vertica for free with no time limit.

Couchbase logo

The modern database for enterprise applications. Build fast. Scale Big. Save more.
Get started today.

Present your product here