Functional dependency

en

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Functional dependency

Quality:

Functional dependency - in relational database theory, a constraint between two sets of attributes in a relation from a database. Article “Functional dependency” in English Wikipedia has 33.8 points for quality (as of July 1, 2025). The article contains 13 references and 20 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 1.78 points.

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

In June 2025 the article “Functional dependency” was edited by 1 authors in English Wikipedia and written by 1 authors in all languages.

Since the creation of article “Functional dependency”, its content was written by 99 registered users of English Wikipedia and edited by 262 registered Wikipedia users in all languages.

The article is cited 45 times in English Wikipedia and cited 184 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #7821 in April 2003
  • Global: #12647 in April 2003

The highest popularity rank from 2008:

  • Local (English): #73482 in November 2013
  • Global: #98529 in November 2014

There are 13 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)
Functional dependency
33.8194
2Norwegian (no)
Funksjonell avhengighet
30.3917
3Estonian (et)
Funktsionaalne sõltuvus
23.1753
4Ukrainian (uk)
Функціональна залежність
13.3359
5Korean (ko)
함수 종속
12.4924
6Chinese (zh)
函数依赖
11.6302
7Russian (ru)
Функциональная зависимость (программирование)
11.5857
8Spanish (es)
Dependencia funcional
10.0081
9German (de)
Funktionale Abhängigkeit
9.9962
10French (fr)
Dépendance fonctionnelle
9.7292
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 "Functional dependency" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Functional dependency
1 443 339
2German (de)
Funktionale Abhängigkeit
369 525
3Russian (ru)
Функциональная зависимость (программирование)
170 871
4Spanish (es)
Dependencia funcional
155 729
5Japanese (ja)
関数従属性
96 346
6Italian (it)
Dipendenza funzionale
87 703
7French (fr)
Dépendance fonctionnelle
67 786
8Korean (ko)
함수 종속
44 546
9Ukrainian (uk)
Функціональна залежність
44 384
10Dutch (nl)
Functionele afhankelijkheid
16 388
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 "Functional dependency" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Functional dependency
2 027
2German (de)
Funktionale Abhängigkeit
318
3Russian (ru)
Функциональная зависимость (программирование)
255
4Italian (it)
Dipendenza funzionale
154
5Spanish (es)
Dependencia funcional
102
6French (fr)
Dépendance fonctionnelle
88
7Japanese (ja)
関数従属性
88
8Chinese (zh)
函数依赖
51
9Ukrainian (uk)
Функціональна залежність
41
10Korean (ko)
함수 종속
37
More...

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

The highest AI

Language versions of the article "Functional dependency" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Functional dependency
99
2German (de)
Funktionale Abhängigkeit
65
3Italian (it)
Dipendenza funzionale
22
4Dutch (nl)
Functionele afhankelijkheid
17
5Russian (ru)
Функциональная зависимость (программирование)
13
6French (fr)
Dépendance fonctionnelle
12
7Spanish (es)
Dependencia funcional
10
8Korean (ko)
함수 종속
8
9Japanese (ja)
関数従属性
5
10Ukrainian (uk)
Функціональна залежність
4
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 "Functional dependency" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Functional dependency
1
2German (de)
Funktionale Abhängigkeit
0
3Spanish (es)
Dependencia funcional
0
4Estonian (et)
Funktsionaalne sõltuvus
0
5French (fr)
Dépendance fonctionnelle
0
6Italian (it)
Dipendenza funzionale
0
7Japanese (ja)
関数従属性
0
8Korean (ko)
함수 종속
0
9Dutch (nl)
Functionele afhankelijkheid
0
10Norwegian (no)
Funksjonell avhengighet
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 "Functional dependency" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Functional dependency
45
2German (de)
Funktionale Abhängigkeit
25
3Norwegian (no)
Funksjonell avhengighet
19
4Spanish (es)
Dependencia funcional
18
5Ukrainian (uk)
Функціональна залежність
17
6Estonian (et)
Funktsionaalne sõltuvus
13
7Japanese (ja)
関数従属性
9
8Korean (ko)
함수 종속
8
9Russian (ru)
Функциональная зависимость (программирование)
8
10Chinese (zh)
函数依赖
8
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
deGerman
Funktionale Abhängigkeit
enEnglish
Functional dependency
esSpanish
Dependencia funcional
etEstonian
Funktsionaalne sõltuvus
frFrench
Dépendance fonctionnelle
itItalian
Dipendenza funzionale
jaJapanese
関数従属性
koKorean
함수 종속
nlDutch
Functionele afhankelijkheid
noNorwegian
Funksjonell avhengighet
ruRussian
Функциональная зависимость (программирование)
ukUkrainian
Функціональна залежність
zhChinese
函数依赖

Popularity rank trends

Best Rank English:
#73482
11.2013
Global:
#98529
11.2014

AI rank trends

Best Rank English:
#7821
04.2003
Global:
#12647
04.2003

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Functional dependency from Wikipedia articles about Database normalisation, Boyce–Codd normal form, Second normal form, Third normal form and Superkey. Whereas reading the article about Functional dependency people most often go to Wikipedia articles on Database normalisation, Armstrongs axioms, Relational database, Relation and Join dependency.

Cumulative results of quality and popularity of the Wikipedia article

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

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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