Property talk:P4102

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Atlas of Hillforts ID
identifier in the Atlas of Hillforts database

Description	identifier in the Atlas of Hillforts database
Associated item	Atlas of Hillforts of Britain and Ireland (Q39046479)
Applicable "stated in" value	Atlas of Hillforts of Britain and Ireland (Q39046479)
Data type	External identifier
Domain	According to this template: hillfort (Q744099) According to statements in the property: hillfort (Q744099) When possible, data should only be stored as statements
Allowed values	\d{4}
Example	Barbury Castle (Q807881) → 0387 Dunnottar Castle (Q746983) → 3112 Hembury (Q3784763) → 3352
Source	https://hillforts.arch.ox.ac.uk/
Formatter URL	https://hillforts.arch.ox.ac.uk/?query=Atlas_of_Hillforts_4166_0%2CMain_Atlas_Number%2C$1
Related to country	United Kingdom (Q145) (See 329 others) Ireland (Q27) (See 40 others) Isle of Man (Q9676)
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 external identifier 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/Constraint violations/P4102 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 4,150 Main statement 4,145 99.9% of uses Qualifier 3 <0.1% of uses Reference 2 <0.1% of uses
Search for values

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

Item “instance of (P31): hillfort (Q744099), promontory fort (Q92086), partial contour fort (Q31028314), contour fort (Q28045079), marsh fort (Q31028965), multiple enclosure hillfort (Q31029044), level terrain fort (Q31028835), hillslope fort (Q31028695)”: Items with this property should also have “instance of (P31): hillfort (Q744099), promontory fort (Q92086), partial contour fort (Q31028314), contour fort (Q28045079), marsh fort (Q31028965), multiple enclosure hillfort (Q31029044), level terrain fort (Q31028835), hillslope fort (Q31028695)”. (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/P4102#Item P31, search

Format “\d{4}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P4102#Format, hourly updated report, SPARQL

Item “country (P17)”: Items with this property should also have “country (P17)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4102#Item P17, hourly updated report, search, SPARQL

Item “located in the administrative territorial entity (P131)”: Items with this property should also have “located in the administrative territorial entity (P131)”. (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/P4102#Item P131, search, SPARQL

Type “hillfort (Q744099)”: item must contain property “instance of (P31)” with classes “hillfort (Q744099)” 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/P4102#Type Q744099, SPARQL

Allowed entity types are Wikibase item (Q29934200): 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/P4102#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): 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/P4102#Scope, SPARQL

Expand "instance of" constraint

@Fralambert: Thanks for putting in place the constraints on this property. How do we change it so that each item has to be an instance of hillfort or a subclass of hillfort? Most hillforts in Wikidata have instance of (P31) promontory fort (Q92086) or a similar subclass. Is it possible to express the constraint so that these do not register as a constraint violation? Thanks in advance for any help, MartinPoulter (talk) 11:23, 17 January 2018 (UTC)

• I added a corresponding type constraint. If you want to monitor P31 values, you could keep the item constraint. If you don't, it could be deleted.
  --- Jura 11:47, 17 January 2018 (UTC)