Design by Contract

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Design by Contract

Quality:

Design by contract - design of software based on formal, precise and verifiable interface specifications for software components. Article “Design by Contract” in German Wikipedia has 24.1 points for quality (as of July 1, 2026). The article contains 5 references and 12 sections.

This article has the best quality in Hungarian Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “Design by Contract”, its content was written by 53 registered users of German Wikipedia and edited by 483 registered Wikipedia users in all languages.

The article is cited 36 times in German Wikipedia and cited 1260 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (German): #9786 in February 2005
  • Global: #353 in February 2002

The highest popularity rank from 2008:

  • Local (German): #81733 in June 2008
  • Global: #69876 in March 2015

There are 21 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, 2026 (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
1Hungarian (hu)
Szerződésalapú programozás
36.6411
2Chinese (zh)
契约式设计
34.7564
3English (en)
Design by contract
33.255
4Japanese (ja)
契約プログラミング
30.2769
5Czech (cs)
Návrh podle kontraktu
28.3863
6German (de)
Design by Contract
24.1366
7Finnish (fi)
Sopimuspohjainen ohjelmointi
23.3874
8Portuguese (pt)
Programação por contrato
22.5661
9Arabic (ar)
تصميم بالعقود
19.6038
10Catalan (ca)
Disseny per contracte
18.6595
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 "Design by Contract" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Design by contract
1 774 553
2Russian (ru)
Контрактное программирование
233 154
3German (de)
Design by Contract
175 366
4Japanese (ja)
契約プログラミング
122 146
5French (fr)
Programmation par contrat
111 750
6Spanish (es)
Diseño por contrato
51 775
7Chinese (zh)
契约式设计
41 664
8Italian (it)
Design by contract
26 679
9Polish (pl)
Programowanie kontraktowe
25 120
10Portuguese (pt)
Programação por contrato
21 133
More...

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

Most popular in June 2026

The most popular language versions of the article "Design by Contract" in June 2026
#LanguagePopularity awardRelative popularity
1English (en)
Design by contract
5 423
2Japanese (ja)
契約プログラミング
586
3French (fr)
Programmation par contrat
429
4Russian (ru)
Контрактное программирование
275
5Chinese (zh)
契约式设计
192
6German (de)
Design by Contract
191
7Spanish (es)
Diseño por contrato
66
8Italian (it)
Design by contract
34
9Polish (pl)
Programowanie kontraktowe
22
10Czech (cs)
Návrh podle kontraktu
19
More...

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

The highest AI

Language versions of the article "Design by Contract" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Design by contract
208
2German (de)
Design by Contract
53
3French (fr)
Programmation par contrat
46
4Russian (ru)
Контрактное программирование
29
5Italian (it)
Design by contract
21
6Japanese (ja)
契約プログラミング
20
7Chinese (zh)
契约式设计
18
8Slovak (sk)
Design by contract
13
9Finnish (fi)
Sopimuspohjainen ohjelmointi
10
10Spanish (es)
Diseño por contrato
9
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 2026

Language versions of the article "Design by Contract" with the highest AI in June 2026
#LanguageAI awardRelative AI
1Arabic (ar)
تصميم بالعقود
1
2Czech (cs)
Návrh podle kontraktu
1
3English (en)
Design by contract
1
4Japanese (ja)
契約プログラミング
1
5Catalan (ca)
Disseny per contracte
0
6Danish (da)
Kontraktbaseret programmering
0
7German (de)
Design by Contract
0
8Esperanto (eo)
Perkontrakta programado
0
9Spanish (es)
Diseño por contrato
0
10Finnish (fi)
Sopimuspohjainen ohjelmointi
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 "Design by Contract" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Design by contract
509
2Chinese (zh)
契约式设计
186
3Arabic (ar)
تصميم بالعقود
156
4Ukrainian (uk)
Проєктування за контрактом
128
5French (fr)
Programmation par contrat
66
6Japanese (ja)
契約プログラミング
44
7Russian (ru)
Контрактное программирование
37
8German (de)
Design by Contract
36
9Spanish (es)
Diseño por contrato
24
10Korean (ko)
계약에 의한 설계
18
More...

Scores

Estimated value for Wikipedia:
German:
Global:
Popularity in June 2026:
German:
Global:
Popularity in all years:
German:
Global:
Authors in June 2026:
German:
Global:
Registered authors in all years:
German:
Global:
Citations:
German:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
تصميم بالعقود
caCatalan
Disseny per contracte
csCzech
Návrh podle kontraktu
daDanish
Kontraktbaseret programmering
deGerman
Design by Contract
enEnglish
Design by contract
eoEsperanto
Perkontrakta programado
esSpanish
Diseño por contrato
fiFinnish
Sopimuspohjainen ohjelmointi
frFrench
Programmation par contrat
heHebrew
חוזה (תכנות)
huHungarian
Szerződésalapú programozás
itItalian
Design by contract
jaJapanese
契約プログラミング
koKorean
계약에 의한 설계
plPolish
Programowanie kontraktowe
ptPortuguese
Programação por contrato
ruRussian
Контрактное программирование
skSlovak
Design by contract
ukUkrainian
Проєктування за контрактом
zhChinese
契约式设计

Popularity rank trends

Best Rank German:
#81733
06.2008
Global:
#69876
03.2015

AI rank trends

Best Rank German:
#9786
02.2005
Global:
#353
02.2002

Local AI rank history

Global AI rank history

Languages comparison

Important global interconnections (July 2025 – June 2026)

Wikipedia readers most often find their way to information on Design by contract from Wikipedia articles about SOLID, Ada, C++26, Eiffel and Bertrand Meyer. Whereas reading the article about Design by contract people most often go to Wikipedia articles on Hoare logic, Eiffel, Invariant, C++26 and Defensive programming.

Cumulative results of quality and popularity of the Wikipedia article

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

News from 1 July 2026

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In German Wikipedia the most popular articles on that day were: Demokratische Republik Kongo, Fußball-Weltmeisterschaft 2026, Senegal, Julian Nagelsmann, Erling Haaland, Sadio Mané, Fußball-Weltmeisterschaft 1994, Jürgen Klopp, Fußball-Europameisterschaft 2028, Fußball-Weltmeisterschaft.

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 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information