Property talk:P8855

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IEV number
reference number in the International Electrotechnical Vocabulary

Applicable "stated in" value	International Electrotechnical Vocabulary (Q1667710)
Data type	External identifier
Allowed values	[0-9]{3}-[0-9]{2}-[0-9]{2,3}
Example	electrical resistance (Q25358) → 131-12-04 magnetic field strength (Q28123) → 121-11-56 characteristic number (Q625902) → 112-03-06
Source	http://www.electropedia.org/
Formatter URL	http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=$1
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 Mix'n'match (Report) Database reports/Constraint violations/P8855 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,502 Main statement 2,371 94.8% of uses Qualifier 3 0.1% of uses Reference 128 5.1% of uses
Search for values

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

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).
List of violations of this constraint: Database reports/Constraint violations/P8855#Unique value, SPARQL (every item), SPARQL (by value)

Format “[0-9]{3}-[0-9]{2}-[0-9]{2,3}”: 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/P8855#Format, 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/P8855#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/P8855#Entity types

First progress

I just aligned some items - basic quantities from electromagnetism - and migrated existing described by source (P1343)-statements to use this property instead, giving us an initial set of 106 values. This count might seem small, but note that this is a manual process: To align one Wikidata item to an IEV entry one should study carefully the definition in the IEV and check whether the Wikidata item is about exactly the same concept. If not, one might have to split a Wikidata item into more specific concepts, add meaningful descriptions so that other users understand the difference, fill out properties like quantity symbol (LaTeX) (P7973) and so on. Toni 001 (talk) 12:16, 24 November 2020 (UTC)

We reached about one thousand values. The task of aligning Wikidata and the IEV so far help a lot in clarifying and fixing the meaning of Wikidata items and providing additional labels in different languages. I also discovered some typos in the IEV which they fixed promptly on https://www.electropedia.org/. Just a quick status update. Toni 001 (talk) 17:54, 3 April 2021 (UTC)

URL match pattern (P8966) ?

@Btcprox: What's the purpose of specifying URL match pattern (P8966)? I just tried putting http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-12-04 as IEV number (P8855) value of electrical resistance (Q25358): WD showed a constraint violation, but did not convert the URL to an id. --Vladimir Alexiev (talk) 14:04, 22 March 2021 (UTC)

@Vladimir Alexiev: That URL match pattern is more for helping of automated scraping of IDs from URLs. It doesn't automatically convert a URL string into the corresponding ID if you input that URL directly into the property's field on Wikidata. However, there is potential for tools to automatically extract the proper IDs to append to the items. Currently right now, Wikidata for Web (Q99894727) uses this to a great degree. Btcprox (talk) 14:16, 22 March 2021 (UTC)

Adding third-party formatter URL (P3303) for german “IEV-Wörterbuch”

Hi everybody,

I wanted to add a statement with the property third-party formatter URL (P3303) and the value “https://www2.dke.de/de/Online-Service/DKE-IEV/Seiten/IEV-Woerterbuch.aspx?search=$?”, but I don't seem to have the rights/permissions for editing property item pages. See Information for "Property:P8855" , section “Page protection”. Quote:

Page protection

Edit	Allow only users with "autoconfirmed" permission (infinite)

How do I get this permission? Or if you think it is a good idea to add this statement, can someone of you add it? --OleDrei (talk) 01:48, 01 January 2022 (UTC)

Thanks for your contribution, I added your suggestion. As far as I know you should become an "autoconfirmed" user after some time and some edits. Toni 001 (talk) 09:52, 3 January 2022 (UTC)