Property talk:P10476

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identifies
this item uniquely and purposefully distinguishes instances of this class from each other

Represents	identifier (Q853614)
Data type	Item
Domain	identifier (Q853614) or Wikidata property for an identifier (Q19847637)
Example	YouTube video ID (Q110851517) → YouTube video (Q63412991) flight number (Q133663) → scheduled air service (Q15817877) International Standard Recording Code (Q1148336) → audio recording (Q3302947) VIAF ID (Q19832964) → agent (Q24229398) work (Q386724) version, edition or translation (Q3331189) geographic entity (Q27096213)
Tracking: usage	Category:Pages using Wikidata property P10476 (Q123697520)
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 By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers 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/P10476 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 219 Main statement 200 91.3% of uses Qualifier 19 8.7% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “identifier (Q853614), Wikidata property for an identifier (Q19847637)”: item must contain property “instance of (P31), subclass of (P279)” with classes “identifier (Q853614), Wikidata property for an identifier (Q19847637)” or their subclasses (defined using subclass of (P279)). (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/P10476#Type Q853614, Q19847637, SPARQL

Scope is as main value (Q54828448), as qualifier (Q54828449): 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/P10476#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/P10476#Entity types

Having trouble with scope on when to use this property

With FaroeSoccer player ID (P6627) as a test case, I wanted to question what @Rdrg109 and @ArthurPSmith had brought up in the property proposal originally. I now see that there are constraint issues when trying to apply a "main subject" context but using Wikidata item of this property (P1629). An example: On this FaroeSoccer player ID (P6627) I want to make a statement that "the object/subject of this external identifier is a association football player (Q937857)". Which is exactly the class that FaroeSoccer player ID (P6627) "identifies" externally. Additionally it would be useful to make a statement to also say that "the main subject is association football (Q2736)". This allows for instance for someone to query using SPARQL and retrieve all properties that have statements where the object has a label of "association football" or "soccer". Currently, those kinds of queries are hard to do in SPARQL from what I see without some adequate statements already on properties. Right now it is easier for me to use Wikidata Property Explorer https://prop-explorer.toolforge.org/ and type in a text filter of "association football" or "soccer" in the Label or Description boxes. But I still would like there to be a way to use SPARQL itself for reproduction and tooling purposes. And the only way I can see how to do that is that external identifiers need more subject relationship statements on them. Which brings me to the question, How best to do that with this new property identifies (P10476) or with main subject (P921) or some other combination? As seen in my example use case with FaroeSoccer player ID (P6627) it seems that the constraint might need to be loosened up to also allow being applied to properties and not only items as suggested by @Jura1 during the proposal?

Here's another example where it would be useful to apply a statement of identifies (P10476) onto GeneReviews ID (P668) to say each GeneReviews ID actually identifies a scholarly article (Q13442814) -- Thadguidry (talk) 16:05, 10 March 2022 (UTC)

Make an item representing an individual FaroeSoccer player ID (P6627) and make that the Wikidata item of this property (P1629) of FaroeSoccer player ID (P6627). Then use identifies (P10476)association football (Q2736) on that identifier item. Yeah, it's going to be a two-step querying process to get all the properties that relate to association football (Q2736), but it's the best we got right now and because Wikidata item of this property (P1629) is still conflated and there's not much we can do unless someone decides to help clean up its intended usage. Lectrician1 (talk) 21:55, 17 March 2022 (UTC)