投影 (关系代数)

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投影 (关系代数)

Quality:

Projection - concept in relational algebra. Article “投影 (关系代数)” in Chinese Wikipedia has 1.8 points for quality (as of July 1, 2025). The article also contains templates indicating quality issues, therefore its score was reduced by 0.09 points.

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

Since the creation of article “投影 (关系代数)”, its content was written by 5 registered users of Chinese Wikipedia and edited by 78 registered Wikipedia users in all languages.

The article is cited 3 times in Chinese Wikipedia and cited 50 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Chinese): #15846 in October 2014
  • Global: #171525 in June 2025

The highest popularity rank from 2008:

  • Local (Chinese): #210848 in June 2009
  • Global: #507904 in February 2015

There are 6 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)
Projection (relational algebra)
12.6414
2Portuguese (pt)
Projeção (álgebra relacional)
8.5733
3Italian (it)
Proiezione (algebra relazionale)
5.4494
4Ukrainian (uk)
Проєкція (реляційна алгебра)
2.4506
5Chinese (zh)
投影 (关系代数)
1.7931
6French (fr)
Projection (algèbre relationnelle)
0.8872
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 "投影 (关系代数)" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Projection (relational algebra)
323 695
2Portuguese (pt)
Projeção (álgebra relacional)
37 112
3French (fr)
Projection (algèbre relationnelle)
10 943
4Ukrainian (uk)
Проєкція (реляційна алгебра)
7 352
5Chinese (zh)
投影 (关系代数)
3 737
6Italian (it)
Proiezione (algebra relazionale)
39
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 "投影 (关系代数)" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Projection (relational algebra)
683
2Portuguese (pt)
Projeção (álgebra relacional)
56
3Italian (it)
Proiezione (algebra relazionale)
39
4Chinese (zh)
投影 (关系代数)
39
5Ukrainian (uk)
Проєкція (реляційна алгебра)
33
6French (fr)
Projection (algèbre relationnelle)
25
More...

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

The highest AI

Language versions of the article "投影 (关系代数)" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Projection (relational algebra)
46
2Portuguese (pt)
Projeção (álgebra relacional)
9
3French (fr)
Projection (algèbre relationnelle)
8
4Ukrainian (uk)
Проєкція (реляційна алгебра)
6
5Chinese (zh)
投影 (关系代数)
5
6Italian (it)
Proiezione (algebra relazionale)
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 "投影 (关系代数)" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Italian (it)
Proiezione (algebra relazionale)
5
2English (en)
Projection (relational algebra)
0
3French (fr)
Projection (algèbre relationnelle)
0
4Portuguese (pt)
Projeção (álgebra relacional)
0
5Ukrainian (uk)
Проєкція (реляційна алгебра)
0
6Chinese (zh)
投影 (关系代数)
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 "投影 (关系代数)" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Projection (relational algebra)
26
2Portuguese (pt)
Projeção (álgebra relacional)
7
3Ukrainian (uk)
Проєкція (реляційна алгебра)
7
4French (fr)
Projection (algèbre relationnelle)
4
5Italian (it)
Proiezione (algebra relazionale)
3
6Chinese (zh)
投影 (关系代数)
3
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
enEnglish
Projection (relational algebra)
frFrench
Projection (algèbre relationnelle)
itItalian
Proiezione (algebra relazionale)
ptPortuguese
Projeção (álgebra relacional)
ukUkrainian
Проєкція (реляційна алгебра)
zhChinese
投影 (关系代数)

Popularity rank trends

Best Rank Chinese:
#210848
06.2009
Global:
#507904
02.2015

AI rank trends

Best Rank Chinese:
#15846
10.2014
Global:
#171525
06.2025

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Projection from Wikipedia articles about Relational algebra, Projection, Projection, Functional dependency and Equivalence relation. Whereas reading the article about Projection people most often go to Wikipedia articles on Relational algebra, Projection, Relation, Unary operation and Projection.

Cumulative results of quality and popularity of the Wikipedia article

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

News from 26 September 2025

On 26 September 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Claudia Cardinale, One Battle After Another, ChatGPT, Alice in Borderland, Guinness, deaths in 2025, Benjamin Netanyahu, Assata Shakur, Charlie Kirk, Arthur Guinness.

In Chinese Wikipedia the most popular articles on that day were: 于朦胧, 今際之國的闖關者 (電視劇), 堰塞湖, BOYS II PLANET, 暴君的廚師, 鏈鋸人, 宋伊人, 颱風樺加沙, 馬太鞍溪堰塞湖溢流, 傅崐萁.

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