Property talk:P508

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BNCF Thesaurus ID
identifier in the subject indexing tool of the National Central Library of Florence
RepresentsNuovo soggettario (Q16583225)
Associated itemNational Central Library of Florence (Q460907), National Central Library of Florence (Q460907)
Data typeExternal identifier
Allowed values[1-9][0-9]*
Exampleartificial intelligence (Q11660)7253 (RDF)
Formatter URL$1
Tracking: sameno label (Q32084823)
Tracking: differencesno label (Q32084826)
Tracking: usageno label (Q32317092)
Tracking: local yes, WD nono label (Q32316936)
Related to countryFlag of Italy.svg Italy (Q38) (See 72 others) (Florence (Q2044))
See alsoThésaurus de la désignation des objets mobiliers ID (P4979), Thésaurus de la désignation des œuvres architecturales et des espaces aménagés ID (P4980)
Proposal discussionProposal discussion
Current uses12,420
Search for values
[create] Create a translatable help page (preferably in English) for this property to be included here
Format “[1-9][0-9]*”: value must be formatted using this pattern (PCRE syntax). (Help)
List of this constraint violations: Database reports/Constraint violations/P508#Format, hourly updated report, SPARQL, SPARQL (new)
Distinct values: this property likely contains a value that is different from all other items. (Help)
List of this constraint violations: Database reports/Constraint violations/P508#Unique value, hourly updated report, SPARQL (every item), SPARQL (by value), SPARQL (new)
Single value: this property generally contains a single value. (Help)
List of this constraint violations: Database reports/Constraint violations/P508#Single value, hourly updated report, SPARQL, SPARQL (new)
This property is being used by:

Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

constraint report relating to Wikimedia disambiguation page (Q4167410)[edit]

If instance of (P31) is a Wikimedia disambiguation page (Q4167410) the presence of BNCF Thesaurus ID (P508) is prohibited. לערי ריינהארט (talk) 18:00, 13 May 2014 (UTC)

see: Wikimedia disambiguation page (Q4167410) with BNCF Thesaurus (P508) לערי ריינהארט (talk) 18:37, 13 May 2014 (UTC)
Usualy there might be more possibilities:
a) Please identify the non - ambiguation page (WD item) where the property BNCF Thesaurus should be moved;
"normally" no other statements should be left at the disambiguation page.
It can happen that a set of properties should be moved to another (a second) WD item, another set to a third WD item etc.
b) (recomended method:) Verify which language is a disambiguation page and separate it from the rest. Please use Gadget-labelLister.js can be activated at preferences#gadgets to remove all faulty (disambiguation) descriptions after the disambiguation page is separated: Verify the descriptions for the following languages: de, en, fr, es, pt, pt-br, ru, sv which where added by bots long time ago and take a short look at the other language descriptions.
c) If method b) can not be used because all linked WMF-project language pages are (local) disambiguation pages please create a new WD item and add a proper description in your native language and in English.

Thanks in advance!

Today (more then two months after the first report) 949 items are found. gangLeri לערי ריינהארט (talk) 06:52, 17 July 2014 (UTC)

Problems with visualisation[edit]

When I first encountered this property on an item, it was linked to the relevant page on the BNCF site, but now this link disappeared, what happened? Bever (talk) 17:54, 13 September 2014 (UTC)

Setting unique and single values as mandatory[edit]

Yesterday I held a technical meeting with National Central Library of Florence (Q460907)'s staff, to analyse and further improve the synchronisation of their thesaurus with Wikidata. One of the ideas we had is to set as mandatory unique and single values, as there shouldn't be exceptions to the 1:1 rule (or at least, really few exceptions). I'm just noting this down for the future. They also gave me a substantial list of confirmed matches, that will be uploaded in the next days. Sannita - not just another sysop 10:00, 1 March 2017 (UTC)

add |mandatory=true only if the violation count is at 0, per Wikidata:Database reports/Constraint violations/Mandatory constraints. Note that setting this parameter does not change how users obey the constraint. It only adds the violations to an overview page to spot data structure degradation more easily. --Pasleim (talk) 14:18, 2 March 2017 (UTC)
@Pasleim: Hm, ok. After we clean all the existing violations, do you advice to put "mandatory = true" back again or not? I do know that it doesn't affect the users' behaviour, but still it's important to fix this. --Sannita - not just another sysop 19:48, 2 March 2017 (UTC)