Command-Query-Separation

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Command-Query-Separation

Quality:

Command–query separation - principle that every method should either be a command that performs an action, or a query that returns data to the caller, but not both; asking a question should not change the answer. Article “Command-Query-Separation” in German Wikipedia has 20.4 points for quality (as of July 1, 2025). The article contains 2 references and 2 sections.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (German) language version.

Since the creation of article “Command-Query-Separation”, its content was written by 9 registered users of German Wikipedia and edited by 115 registered Wikipedia users in all languages.

The article is cited 13 times in German Wikipedia and cited 176 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (German): #15062 in May 2014
  • Global: #9050 in August 2003

The highest popularity rank from 2008:

  • Local (German): #244693 in September 2018
  • Global: #170695 in January 2019

There are 8 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
Command–query separation
21.505
2German (de)
Command-Query-Separation
20.4069
3Serbian (sr)
CQRS
18.7633
4Russian (ru)
CQRS
14.6867
5Spanish (es)
Command–query separation
14.1196
6Ukrainian (uk)
CQRS
10.1542
7French (fr)
Séparation commande-requête
9.4832
8Japanese (ja)
コマンドクエリ分離
9.1647
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Command-Query-Separation" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Command–query separation
866 243
2Russian (ru)
CQRS
273 712
3German (de)
Command-Query-Separation
33 117
4Spanish (es)
Command–query separation
23 096
5Ukrainian (uk)
CQRS
16 876
6French (fr)
Séparation commande-requête
14 360
7Japanese (ja)
コマンドクエリ分離
1 551
8Serbian (sr)
CQRS
181
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Command-Query-Separation" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Command–query separation
4 340
2Russian (ru)
CQRS
560
3French (fr)
Séparation commande-requête
180
4Japanese (ja)
コマンドクエリ分離
124
5Spanish (es)
Command–query separation
114
6Ukrainian (uk)
CQRS
108
7German (de)
Command-Query-Separation
91
8Serbian (sr)
CQRS
12
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Command-Query-Separation" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Command–query separation
73
2Russian (ru)
CQRS
11
3German (de)
Command-Query-Separation
9
4Ukrainian (uk)
CQRS
7
5French (fr)
Séparation commande-requête
6
6Serbian (sr)
CQRS
5
7Spanish (es)
Command–query separation
3
8Japanese (ja)
コマンドクエリ分離
1
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Command-Query-Separation" with the highest AI in June 2025
#LanguageAI awardRelative AI
1German (de)
Command-Query-Separation
0
2English (en)
Command–query separation
0
3Spanish (es)
Command–query separation
0
4French (fr)
Séparation commande-requête
0
5Japanese (ja)
コマンドクエリ分離
0
6Russian (ru)
CQRS
0
7Serbian (sr)
CQRS
0
8Ukrainian (uk)
CQRS
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Command-Query-Separation" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Ukrainian (uk)
CQRS
134
2English (en)
Command–query separation
18
3German (de)
Command-Query-Separation
13
4French (fr)
Séparation commande-requête
4
5Spanish (es)
Command–query separation
3
6Japanese (ja)
コマンドクエリ分離
3
7Russian (ru)
CQRS
1
8Serbian (sr)
CQRS
0
More...

Scores

Estimated value for Wikipedia:
German:
Global:
Popularity in June 2025:
German:
Global:
Popularity in all years:
German:
Global:
Authors in June 2025:
German:
Global:
Registered authors in all years:
German:
Global:
Citations:
German:
Global:

Quality measures

Interwikis

#LanguageValue
deGerman
Command-Query-Separation
enEnglish
Command–query separation
esSpanish
Command–query separation
frFrench
Séparation commande-requête
jaJapanese
コマンドクエリ分離
ruRussian
CQRS
srSerbian
CQRS
ukUkrainian
CQRS

Popularity rank trends

Best Rank German:
#244693
09.2018
Global:
#170695
01.2019

AI rank trends

Best Rank German:
#15062
05.2014
Global:
#9050
08.2003

Global AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Command–query separation from Wikipedia articles about Command Query Responsibility Segregation, Eiffel, List of software development philosophies, Create, read, update and delete and Event Sourcing. Whereas reading the article about Command–query separation people most often go to Wikipedia articles on Command Query Responsibility Segregation, Heisenbug, Eiffel, Referential transparency and Design by contract.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

ru: CQRS
uk: CQRS
sr: CQRS

News from 15 February 2026

On 15 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Wuthering Heights, 2026 Winter Olympics, Epstein files, Ilia Malinin, Wuthering Heights, Ghislaine Maxwell, Lucas Pinheiro Braathen, 2026 Winter Olympics medal table, Valentine's Day.

In German Wikipedia the most popular articles on that day were: Jeffrey Epstein, Cordelia Wege, Polizeiruf 110: Der Wanderer zieht von dannen, Lawrence von Arabien (Film), Medaillenspiegel der Olympischen Winterspiele 2026, Peter Kurth (Schauspieler), Die Tribute von Panem – The Ballad of Songbirds and Snakes, Olympische Winterspiele 2026/Eishockey (Herren), Olympische Winterspiele 2026, Federica Brignone.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information