Property talk:P270

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CALIS ID
identifier for authority control per CALIS (China Academic Library & Information System)

Description	authority control number of the China Academic Library and Information System (Q9384291) (CALIS)
Associated item	China Academic Library and Information System (Q9384291)
Applicable "stated in" value	China Academic Library and Information System (Q9384291)
Has quality	prefix (Q23585486)
Data type	External identifier
Template parameter	zh:Template:Authority control/CALIS
Domain	Persons, places... (note: this should be moved to the property statements)
Allowed values	n\d{10}
Example	Kangxi Emperor (Q17790) → n2004449134 Du Fu (Q33772) → n2004122303
Source	http://www.calis.edu.cn/
Formatter URL	http://opac.calis.edu.cn/aopac/ajsp/detail.jsp?actionfrom=1&actl=CAL++$1
Related to country	People's Republic of China (Q148) (See 127 others)
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/P270 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 3,769 Main statement 3,765 99.9% of uses Qualifier 2 <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]

Format “n2[0-9]{9}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P270#Format, hourly updated report, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

List of violations of this constraint: Database reports/Constraint violations/P270#Unique value, hourly updated report, 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/P270#Single value, 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/P270#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/P270#Scope, SPARQL

This property is being used by: s:ru:Шаблон:Внешние ссылки Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)