Property talk:P8647

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Library of Congress Children's Subject Headings ID
identifier for a heading in the Library of Congress Children's Subject Headings

Represents	Library of Congress Linked Data Service (Q17109002)
Associated item	Library of Congress (Q131454)
Applicable "stated in" value	Library of Congress Children's Subject Headings (Q98713532)
Data type	External identifier
Allowed values	sj(9[6-9]\d{6}|20\d{8}|0\d{7})
Example	Arthropoda (Q1360) → sj96004824 (RDF) Felidae (Q25265) → sj2001005201 (RDF) Grand Duchess Anastasia Nikolaevna of Russia (Q151130) → sj98000129 (RDF) Crime and Punishment (Q165318) → sj96005302 (RDF) baker (Q160131) → sj2008009618 (RDF) bakery (Q274393) → sj2008009618 (RDF)
Formatter URL	https://id.loc.gov/authorities/childrensSubjects/$1 https://id.loc.gov/authorities/childrensSubjects/$1.rdf
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/P8647 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 665 Main statement 656 out of 936 (70% complete) 98.6% of uses Qualifier 6 0.9% of uses Reference 3 0.5% of uses
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Format “sj(9[6-9]\d{6}|20\d{8}|0\d{7})”: 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/P8647#Format, 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). Known exceptions: baker (Q160131), bakery (Q274393), bicycle (Q11442), cycling (Q53121), tricycle (Q536135), dog (Q144), puppy (Q39266), Amaryllis (Q161577), Hippeastrum (Q757257), school newspaper (Q20850562), student newspaper (Q738377), handbook (Q1338914), dental hygiene (Q113112251), dental care (Q51764646), manual (Q16363676), Semnopithecus entellus (Q817180), stalactite (Q177197), stalagmite (Q181312), Presbytis entellus (Q12351861)
List of violations of this constraint: Database reports/Constraint violations/P8647#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/P8647#Single value, SPARQL

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/P8647#Scope, 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/P8647#Entity types

Qualifiers “subject named as (P1810), reason for deprecated rank (P2241), alternative name (P4970), mapping relation type (P4390), reason for preferred rank (P7452), scope note (P9570), broader concept (P4900), object of statement has role (P3831), identifier shared with (P4070)”: this property should be used only with the listed qualifiers. (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/P8647#allowed qualifiers, SPARQL