single-value constraint

type of constraint for Wikidata properties: used to specify that this property generally contains a single value per item
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single-value constraint

Summary

Key Facts

  • single-value constraint is a type of property constraint[1].
  • single-value constraint is the opposite of multi-value constraint[2].
  • single-value constraint's described at URL is recorded as https://www.wikidata.org/wiki/Special:MyLanguage/Help:Property_constraints_portal/Single_value[3].
  • single-value constraint's facet of is recorded as Wikidata property for an identifier that generally has just one value, but rarely can have two or more values for the same entity[4].
  • single-value constraint's topic has template is recorded as Template:Constraint:Single value[5].
  • single-value constraint's used by is recorded as OpenRefine Wikidata extension[6].
  • single-value constraint's used by is recorded as WikibaseQualityConstraints[7].
  • single-value constraint's short name is recorded as Single value[8].
  • single-value constraint's short name is recorded as 单一值[9].
  • single-value constraint's short name is recorded as một giá trị[10].
  • single-value constraint's short name is recorded as egyetlen érték[11].
  • single-value constraint's short name is recorded as єдине значення[12].
  • single-value constraint's short name is recorded as একক মান[13].
  • single-value constraint's short name is recorded as ఏకైక విలువ[14].
  • single-value constraint's short name is recorded as μοναδική τιμή[15].
  • single-value constraint's short name is recorded as valor singular[16].
  • single-value constraint's short name is recorded as ena vrednost[17].
  • single-value constraint's different from is recorded as distinct-values constraint[18].
  • single-value constraint's different from is recorded as single-best-value constraint[19].
  • single-value constraint's Wikidata usage instructions is recorded as use as value for P2302 (property constraint)[20].
  • single-value constraint's Wikidata usage instructions is recorded as 用作P2302(属性约束)的值[21].
  • single-value constraint's Wikidata usage instructions is recorded as P2302(プロパティ制約)の値として使用[22].

Body

Definition and Type

single-value constraint is a type of property constraint[1]. It is the opposite of multi-value constraint[2].

Use and Application

Recorded used by include OpenRefine Wikidata extension[6] and WikibaseQualityConstraints[7].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [1] . wikidata.org.
  2. [2] . wikidata.org.
  3. [3] . wikidata.org.
  4. [4] . wikidata.org.
  5. [5] . wikidata.org.
  6. [6] . raw.githubusercontent.com. Retrieved . raw.githubusercontent.com. Provenance: wikidata.org.
  7. [7] . raw.githubusercontent.com. Retrieved . raw.githubusercontent.com. Provenance: wikidata.org.
  8. [8] . wikidata.org.
  9. [9] . wikidata.org.
  10. [10] . wikidata.org.
  11. [11] . wikidata.org.
  12. [12] . wikidata.org.
  13. [13] . wikidata.org.
  14. [14] . wikidata.org.
  15. [15] . wikidata.org.
  16. [16] . wikidata.org.
  17. [17] . wikidata.org.
  18. [18] . wikidata.org.
  19. [19] . wikidata.org.
  20. [20] . wikidata.org.
  21. [21] . wikidata.org.
  22. [22] . wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). single-value constraint. Retrieved May 7, 2026, from https://4ort.xyz/entity/single-value-constraint
MLA “single-value constraint.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/single-value-constraint.
BibTeX @misc{4ortxyz_single-value-constraint_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{single-value constraint}}, year = {2026}, url = {https://4ort.xyz/entity/single-value-constraint}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): single-value constraint — https://4ort.xyz/entity/single-value-constraint (retrieved 2026-05-07)

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