Property talk:P2271

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Wikidata property example for properties
examples of using a property in an item statement

Data type	Property
Domain	Wikidata property for properties (Q22582645) or Wikidata qualifier (Q15720608)
Example	Wikidata property example for properties (P2271) → Wikidata property example for properties (P2271) inverse property (P1696) → part of (P361) subproperty of (P1647) → parent taxon (P171) Wikidata property example (P1855) → position held (P39)
See also	Wikidata property example for forms (P5193), Wikidata property example for lexemes (P5192), Wikidata property example (P1855)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Complex constraint violations/P2271 Database reports/Constraint violations/P2271 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 220 Main statement 216 98.2% of uses Qualifier 4 1.8% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Type “Wikidata property for properties (Q22582645), Wikidata qualifier (Q15720608)”: item must contain property “instance of (P31)” with classes “Wikidata property for properties (Q22582645), Wikidata qualifier (Q15720608)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2271#Type Q22582645, Q15720608, SPARQL

Value type “Wikidata property (Q18616576)”: This property should use items as value that contain property “instance of (P31)”. On these, the value for instance of (P31) should be an item that uses subclass of (P279) with value Wikidata property (Q18616576) (or a subclass thereof). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2271#Value type Q18616576, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2271#Scope, SPARQL

Multi value: this property generally contains two or more values. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2271#Multi value, SPARQL

Item “property constraint (P2302)”: Items with this property should also have “property constraint (P2302)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2271#Item P2302, search, SPARQL

Allowed entity types are Wikibase property (Q29934218): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2271#Entity types

Non-existent examples
Properties with examples that do not exist at the target properties (Help)
Violations query: SELECT ?item WHERE { ?item p:P2271 ?example . ?example ps:P2271 ?targetitem . ?example ?pq ?value . ?prop wikibase:qualifier ?pq . ?prop wikibase:propertyType ?dt . ?item wikibase:propertyType ?dt . FILTER NOT EXISTS { { ?prop wikibase:claim ?p } UNION { ?item wikibase:claim ?p } . ?ip wikibase:claim ?p . ?targetitem ?p ?statement . ?ip wikibase:statementProperty ?ps . ?statement ?ps ?value . } . }
List of this constraint violations: Database reports/Complex constraint violations/P2271#Non-existent examples

Purpose

What is the difference of this property from P1863 (P1863) and Wikidata property example (P1855)? May be to create some help page where to describe documentation model... --Infovarius (talk) 20:42, 3 November 2015 (UTC)

It's the same as P1855, except that the datatype allows property-entities, not item-entities. In a few cases, this is needed.

Both can use P1863 as qualifier. --- Jura 20:58, 3 November 2015 (UTC)