Property talk:P5017

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last update
date a reference was modified, revised, or updated

Data type	Point in time
Usage notes	Use in references only
Example	Brugada Syndrome (Q28071746) Wikimedia Foundation (Q180) → 8 October 2020 New York (Q1384) → 7 January 2020
Tracking: usage	Category:Pages using Wikidata property P5017 (Q113553132)
See also	date of the latest one (P7125), retrieved (P813), publication date (P577), embargoed until (P11140)
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 statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Future dates Dates in Gregorian calendar before 1582 Dates before year 1 (Help:Dates#Years BC) Date on January 1 (Help:Dates#January 1 as date) Database reports/Constraint violations/P5017 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,147,507 Main statement 409 <0.1% of uses Qualifier 1,584 <0.1% of uses Reference 2,145,514 >99.9% of uses

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

Scope is as reference (Q54828450), as qualifier (Q54828449), 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/P5017#Scope, SPARQL

This property is being used by: fr:Modèle:Infobox Archidiocèse catholique/wd, fr:Modèle:Infobox Juridiction christianisme/wd Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Limitation

Why this is limited only for the references? Why this cannot be used e.g. for an update of an online article in the magazine? --Juandev (talk) 16:01, 7 September 2019 (UTC)

The property might be used for statements in the items like Farhad Fatkullin named Wikimedian of the Year for 2018 (Q66385139), Offline-Pedia converts old televisions into Wikipedia readers (Q66491069), Q67939617, Ceny za rozvoj české Wikipedie ve fotografii i jinak (Q67922512), The Czech Wikipedia has 150,000 articles (Q67200635) to identify the date of an update which is common for ditital works. So as there is a statement for creation (publication date (P577)) we need a statement for update. Thats why I would propose this property to wider its use and cover also as main value (Q54828448). --Juandev (talk) 19:53, 21 September 2019 (UTC) moved in a new section —Eihel (talk) 22:44, 21 September 2019 (UTC)

Major changes request to last update (P5017)

Motivation

The property might be used for statements in the items like Farhad Fatkullin named Wikimedian of the Year for 2018 (Q66385139), Offline-Pedia converts old televisions into Wikipedia readers (Q66491069), Q67939617, Ceny za rozvoj české Wikipedie ve fotografii i jinak (Q67922512), The Czech Wikipedia has 150,000 articles (Q67200635) to identify the date of an update which is common for ditital works. So as there is a statement for creation (publication date (P577)) we need a statement for update. Thats why I would propose this property to wider its use and cover also as main value (Q54828448). --Juandev (talk) 19:53, 21 September 2019 (UTC)

Notified contributors of the initial discussion of the proposal@ArthurPSmith, Pintoch, Jura1, Andrawaag, ديفيد عادل وهبة خليل 2:@Sj, Pigsonthewing, Vladimir Alexiev, ChristianKl, Juandev: —Eihel (talk) 22:46, 21 September 2019 (UTC)

Notified contributors of the initial discussion of the proposal@ArthurPSmith, Pintoch, Jura1, Andrawaag, ديفيد عادل وهبة خليل 2:--Trade (talk) 07:10, 17 August 2020 (UTC)

Discussion

• The reason for restricting it to references is that doesn't make the statement invalid when the item is updated and wikidata is not aware of that update. It was suggested to use significant event (P793) to record updates to an item that don't already have a suitable property to describe them. ArthurPSmith (talk) 16:49, 23 September 2019 (UTC)
  • Really? I would imagine more properties where the value could be updated and the Wikidata might not be aware of it. For example archive URL (P1065) and probably many others. How significant event (P793) could describe, what kind of event is it? --Juandev (talk) 17:37, 23 September 2019 (UTC)
    • Probably like this? Q67939617#P793 Vojtěch Dostál (talk) 12:08, 29 September 2019 (UTC)
      • Well, I wonder, how well be quering such values! Quering last update (P5017) sounds pretty intuitive, while this way Q67939617#P793. Not so much. Is it a goal of Wikidatiens to encode information, to be hardly discovered, or what is the point behind to try to find the solution, instead create of wider the property? --Juandev (talk) 12:57, 29 September 2019 (UTC)
        • Querying is probably not a big issue (it is pretty easy: https://w.wiki/94Q). Predictability might be an issue, though. I am not against your proposal, I'm just explaining what ArthurPSmith meant. Vojtěch Dostál (talk) 16:01, 29 September 2019 (UTC)
          • Querying is not a big issue for someone, who know SPARQL. I personally does not have time to learn SPARQL, so I dont understand your code at all. But thanks anyway. --Juandev (talk) 16:37, 29 September 2019 (UTC)
            • @Juandev Yeah but Wikidata isn't primarily for people, it's a project to be read by machines or data scientists.Vojtěch Dostál (talk) 15:25, 6 October 2019 (UTC)
              • Link? --Juandev (talk) 16:57, 6 October 2019 (UTC)