Property talk:P3920

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Canadian Coastguard Lighthouse ID
identifier of a Canadian lighthouse or beacon in the Canadian Coast Guard List of Lights, Buoys and Fog Signals

Associated item	Canadian Coast Guard (Q383520)
Has quality	prefix (Q23585486)
Data type	External identifier
Template parameter	|canada= in en:Infobox lighthouse (Q13384512)
Domain	According to this template: beacon (Q7321258) According to statements in the property: beacon (Q7321258) When possible, data should only be stored as statements
Allowed values	[NAIP][1-9]\d*(\.\d+)?
Example	Île-Verte Lighthouse (Q3378454) → A1761 Gimli Light (Q115237065) → 1569 Warren Landing Lower Range Front Light (Q115237069) → 1620
Source	https://www.notmar.gc.ca/list-livre-en.php http://www.notmar.gc.ca/list-livre-fr.php
Tracking: usage	Category:Pages using Wikidata property P3920 (Q29644536)
Related to country	Canada (Q16) (See 159 others)
See also	Heritage Lighthouse of Canada ID (P3211)
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/P3920 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 210 Main statement 207 98.6% of uses Qualifier 3 1.4% of uses
Search for values

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Distinct values: this property likely contains a value that is different from all other items. (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/P3920#Unique value, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (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/P3920#Single value, SPARQL

Format “[NAIP][1-9]\d*(\.\d+)?”: value must be formatted using this pattern (PCRE syntax). (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/P3920#Format, SPARQL

Type “beacon (Q7321258)”: item must contain property “instance of (P31)” with classes “beacon (Q7321258)” 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/P3920#Type Q7321258, SPARQL

Item “instance of (P31)”: Items with this property should also have “instance of (P31)”. (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/P3920#Item P31, search, 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/P3920#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/P3920#Scope, SPARQL

This property is being used by: sl:Predloga:Lighthouse identifiers/list ko:틀:위키데이터 속성 추적 Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Volumes

The ID's are published in four volumes. I noticed that some numerals are duplicate. Therefore I have added a initial letter to indicate the volume: N (Newfoundland and Labrador coast), A (Atlantic coast), I (inland waters) and P (Pacific coast). They are now in the regex as "possible", because I intend to first correct the existing values. After completion of that, I will make the initial letter a fixed part of the identifier. Lymantria (talk) 07:05, 15 June 2017 (UTC)

I have just removed the optional part of the prefix, so now these will start to appear in the constraint violations report. I will try and help to fix these up. — Martin (MSGJ · talk) 21:15, 13 November 2021 (UTC)

@Lymantria: I think this is now complete! — Martin (MSGJ · talk) 21:52, 14 November 2021 (UTC)