property constraint

constraint applicable to a Wikidata property

  • constraint
  • rdfs:domain
  • rdfs:range

Data type



Both Special:Constraint report and Wikidata:Database reports/Constraint violations use constraint statements, and have done so since July 2017 (English)
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Special:Constraint的报告和Wikidata:Database reports/Constraint的违例均已从2017年7月起使用约束声明 (Simplified Chinese)
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for display on property talk pages (English)
для показу на сторінці обговорення властивості (Ukrainian)
能夠在屬性討論頁上顯示 (Chinese)
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The applicability of a property for use as a main value, qualifier or reference should always be known. (English)
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Properties must always be discussed before creation per Wikidata Policy https://wikidata.org/wiki/Special:MyLanguage/Wikidata:Property_creation . Note some of the earliest created properties do not have proposal pages and <no value> is therefore acceptable for these earliest created properties. (English)
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