Property talk:P1190

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Universal Decimal Classification
library classification of this topic

Description	Universal Decimal Classification (Q243350): a bibliographic and library classification developed by the Belgian bibliographers Paul Otlet and Henri La Fontaine at the end of the 19th century.
Applicable "stated in" value	Universal Decimal Classification (Q243350)
Data type	External identifier
Allowed values	\d{1,3}(\.\d{1,3})*
Example	social science (Q34749) → 3 sociology of culture (Q1570681) → 316.7 politics (Q7163) → 32
Source	http://www.udcsummary.info/php/index.php
See also	Dewey Decimal Classification (P1036), Library of Congress Classification (P1149), Basisklassifikation (P5748), Regensburg Classification (P1150), Colon Classification (P8248), Universal Decimal Classification (works and editions) (P8361), BBK (library and bibliographic classification) (P8391)
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/P1190 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 247 Main statement 231 93.5% of uses Qualifier 3 1.2% of uses Reference 13 5.3% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Format “((["(*+:=`-]|\(=|:{1,2})?[0-9]{1,3}(\.[0-9]{1,3})*[")]?)+”: 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/P1190#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/P1190#Entity types

Scope is as main value (Q54828448): 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/P1190#Scope, SPARQL

Conflicts with “instance of (P31): Wikimedia disambiguation page (Q4167410), version, edition or translation (Q3331189), literary work (Q7725634), book (Q571), magazine (Q41298), scientific journal (Q5633421), academic journal (Q737498), monographic series (Q15695196), monograph series (Q1700470), periodical (Q1002697), volume (Q1238720), open-access journal (Q773668)”: this property must not be used with the listed properties and values. (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/P1190#Conflicts with P31, SPARQL

This property is being used by: el:Πρότυπο:Πληροφορίες βιβλίου azb:شابلون:Infobox library classification en:Template:Infobox library classification id:Templat:Infobox library classification uk:Шаблон:Твір ban:Mal:Infobox library classification Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Missing information

The property documentation is incomplete: infobox parameter and source are missing. What library catalogs are using this classification? --Kolja21 (talk) 18:44, 3 March 2014 (UTC)

 Done I've added the missing information to the property documentation. --Kolja21 (talk) 12:38, 5 March 2014 (UTC)

Usage of the property

I think the property has a problem of its definition: It is used both on works (e.g. Diccionario geográfico-estadístico-histórico de España y sus posesiones de Ultramar (Q3822320)Universal Decimal Classification (P1190)'908(460)(038)'; cf. also Universal Decimal Classification (P1190)instance of (P31)Wikidata property for authority control for works (Q19833377), which is IMHO wrong, UDC does not specify an authority identifier of the work, only the categorization of its subject topic), and on topics (e.g. politics (Q7163)Universal Decimal Classification (P1190)'32'). Shouldn’t we split these two usages, possibly making the second one an authority identifier? OTOH, Dewey Decimal Classification (P1036) is defined the same way and has the same problems… --Mormegil (talk) 09:19, 27 February 2019 (UTC)

@Mormegil: Yes I just noticed the same thing. I agree we should split these two usages. Vojtěch Dostál (talk) 09:34, 26 March 2020 (UTC)

Apparently, there was a big discussion and multi-property proposal concerning this exact topic without anyone participating feeling the need to note this on talkpages of the relevant properties, especially where this discussion was already taking place. Oh dear. See Wikidata:Property proposal/Library classifications' IDs for topics and the newly created Universal Decimal Classification (works and editions) (P8361) and others. --Mormegil (talk) 10:00, 19 July 2023 (UTC)