Property talk:P2000

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CPDL ID
identifier of a work or person, in the Choral Public Domain Library

Applicable "stated in" value	Choral Public Domain Library (Q519635)
Has quality	MediaWiki page title (Q83336425)
Data type	External identifier
Corresponding template	Template:ChoralWiki (Q6923284)
Template parameter	Template:ChoralWiki (Q6923284) from various languages, particularly w:Template:ChoralWiki
Domain	person, creative work, musical compositions (note: this should be moved to the property statements)
Allowed values	[^/]+.{1,200}.{2,100}(?!.*?%[0-9A-F]{2}).*
Example	Cantigas de Santa Maria (Q1033824) → Cantigas de Santa Maria Ridolfo Arlotti (Q98593434) → Ridolfo Arlotti
Source	http://www.cpdl.org/
Formatter URL	https://www.cpdl.org/wiki/index.php/$1
Robot and gadget jobs	import w:Template:ChoralWiki
Tracking: usage	Category:Pages using Wikidata property P2000 (Q54286620)
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/Humans with missing claims/P2000 Database reports/Constraint violations/P2000 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 678 Main statement 675 99.6% of uses Qualifier 2 0.3% of uses Reference 1 0.1% 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/P2000#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/P2000#Single value, SPARQL

Format “[^/]+”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P2000#Format, hourly updated report, SPARQL

Format “.{1,200}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P2000#Format, hourly updated report, SPARQL

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

List of violations of this constraint: Database reports/Constraint violations/P2000#Scope, hourly updated report, SPARQL

Format “.{2,100}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P2000#Format, hourly updated report, 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/P2000#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/P2000#Entity types

Format “(?!.*?%[0-9A-F]{2}).*”: 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/P2000#Format, SPARQL

Proposal - Change Data type of CPDL ID (P2000) from String to External identifier

The following discussion is closed. Please do not modify it. Subsequent comments should be made in a new section. A summary of the conclusions reached follows.

Change to External identifier per discussion. Regards, ZI Jony ^(Talk) 17:09, 22 March 2020 (UTC)

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I think String is the wrong type for CPDL ID (P2000). Can we please change it to be External identifier.

As per Help:Data_type#Changing_datatype please indicate support/opposition below. Iwan.Aucamp (talk) 16:51, 15 October 2019 (UTC)

Discussion

•  Support Definitely. ArthurPSmith (talk) 17:29, 15 October 2019 (UTC)
•  Support. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 18:29, 15 October 2019 (UTC)
•  Support. I don't know the mechanics, but it's clearly an identifier, not an inherent property of the subject. -Animalparty (talk) 07:12, 4 January 2020 (UTC)
•  Support. Please change data type, so that the formatter URL may start displaying a proper link, as it did before. —capmo (talk) 18:06, 16 March 2020 (UTC)

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The above discussion is preserved as an archive. Please do not modify it. Subsequent comments should be made in a new section.

Sorting

@Epìdosis, ArthurPSmith, Pigsonthewing, Animalparty: It sorts before VIAF - found on Q63530945. Can that be fixed? MrProperLawAndOrder (talk) 20:21, 14 May 2020 (UTC)

@MrProperLawAndOrder:  Done fixed. --Epìdosis 20:39, 14 May 2020 (UTC)

Just out of curiosity: who defines which identifiers should take precedence over others? Wouldn't it be easier to locate an ID in an alphabetical list, especially on items with lots of them? —capmo (talk) 16:11, 16 May 2020 (UTC)