Property talk:P6579

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National Book Foundation author ID
identifier for an author on the website of the National Book Foundation

Associated item	National Book Foundation (Q6971093)
Data type	External identifier
Allowed values	[a-z]+(-[a-z]+)?
Example	Steve Coll (Q128771) → steve-coll William Faulkner (Q38392) → william-faulkner Lisa Ko (Q38093438) → lisa-ko
Source	https://www.nationalbook.org/national-book-awards/search/
Formatter URL	https://www.nationalbook.org/people/$1/
Tracking: usage	Category:Pages using Wikidata property P6579 (Q61997027)
Related to country	United States of America (Q30) (See 771 others)
See also	National Book Foundation book ID (P6580)
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) Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Database reports/Constraint violations/P6579 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 45 Main statement 35 77.8% of uses Qualifier 3 6.7% of uses Reference 7 15.6% of uses
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Item “instance of (P31): human (Q5)”: Items with this property should also have “instance of (P31): human (Q5)”. (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/P6579#Item P31, search, SPARQL

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/P6579#Single value, SPARQL

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/P6579#Unique value, SPARQL (every item), SPARQL (by value)

Format “[a-z]+(-[a-z]+)?”: 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). Known exceptions: Annie Proulx (Q229840)
List of violations of this constraint: Database reports/Constraint violations/P6579#Format, 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/P6579#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/P6579#Scope, SPARQL