Property talk:P6821

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Uppsala University Alvin ID
platform for digital collections and digitized cultural heritage in Uppsala about, managed by Uppsala university library

Associated item	Uppsala University (Q185246), Alvin (Q59341385)
Applicable "stated in" value	Alvin (Q59341385)
Data type	External identifier
Domain	human (Q5), geographic location (Q2221906), organization (Q43229), group of humans (Q16334295) or work (Q386724)
Allowed values	^alvin-(record|person|place|organisation|work):[1-9]\d{0,6}$
Usage notes	Ange Alvin ID finns plats, person och record
Example	Johan Georg Breuer (Q16801941) → alvin-person:51952 (RDF) Abraham Cronström (Q5613604) → alvin-person:32908 (RDF) Anders Spole (Q2846475) → alvin-person:1328 (RDF) August Strindberg (Q7724) → alvin-person:695 (RDF) Berlin (Q64) → alvin-place:684 (RDF) Abraham Lundquist AB (Q10398035) → alvin-organisation:1049 (RDF) Il pastor fido (Q1658249) → alvin-record:179727 (RDF)
Commons example	→ alvin-record:95077 → alvin-record:95058 → alvin-record:100184
Source	https://info.alvin-portal.org/
Formatter URL	https://www.alvin-portal.org/alvin/view.jsf?pid=$1
Related to country	Sweden (Q34) (See 117 others)
See also	Dictionary of Swedish National Biography ID (P3217)
Lists	Search Commons for files with property 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 Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Mix'n'match (Report) Database reports/Constraint violations/P6821 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 37,523 Main statement 32,973 out of 250,000 (13% complete) 87.9% of uses Qualifier 10 <0.1% of uses Reference 4,540 12.1% 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)

List of violations of this constraint: Database reports/Constraint violations/P6821#Unique value, hourly updated report, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (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/P6821#Single value, SPARQL

Type “human (Q5), geographic location (Q2221906), organization (Q43229), group of humans (Q16334295), work (Q386724)”: item must contain property “instance of (P31)” with classes “human (Q5), geographic location (Q2221906), organization (Q43229), group of humans (Q16334295), work (Q386724)” 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/P6821#Type Q5, Q2221906, Q43229, Q16334295, Q386724, SPARQL

Format “alvin-(record|person|place|organisation|work):[1-9]\d{0,6}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P6821#Format, hourly updated report, 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/P6821#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200), Wikibase MediaInfo (Q59712033): 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/P6821#Entity types

This property is being used by: sv:Mall:Alvin Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Deviation from proposal

How this property is being used differs a lot from the proposal that was approved (which especially can be seen in the examples from back then), but there has never been any discussion on this talk page about those changes. Should we revert back to how it was intended to be used or can anyone document which changes that have been made and why? Ainali (talk) 22:45, 13 November 2020 (UTC)

Explain what the problem is. Its just an external identifier with an unique id at the external system. The problem I feel is the communication with the external system Alvin see T226099 and that e.g. user LittleGun dont think its worth linking from sv:Wikipedia see discussion. I created a tweet and asked if Alvin/ Uppsala Uni Lib are interested in being an external identifier in Wikidata... FYI I created a proposal for Arken. Interesting article about the "relation" Arken/Alvin maybe Arken is faster moving with a clear vision?!?!?

– Vi vill att man ska kunna återanvända informationen i ett ekosystem som hänger ihop.:

I wrote down some lesson learned after > 600 000 edits on Wikidata and connected > 10 external sources

- Salgo60 (talk) 20:03, 16 November 2020 (UTC)

The main problem is that the changes are undocumented and someone trying to figure out why it is not as voted on is stranded and unsure if the changes should be reverted or if the property actually got improved. It's not the changes per se that I am arguing here, it's the lack of collaboration in the process. If the changes can be argued for and documented here it might be alright, but right now, that knowledge is hidden from the community. Ainali (talk) 21:54, 16 November 2020 (UTC)

"Documentation"

• examples P6821#P1855
• T225522 more examples
• Issues were we need to get some kind of letter of intent from the Albin portal Task T226099
• another wish that the Alvin portal get better metadata for "typed species" see T236310
  • also documented is how Alvin can use WIkidata to use the work Digital Humanities Uppsala is doing see T236459
• my opinion of best practice for being a "mature external" Wikidata property link

The main argument that we dont create new properties for person places.... is that its not scaling... if we had Wikidata as an external identifier then we needed a new property for every new type of instance of (P31) created so its better doing as in the Alvin case.. and that the external identifier has an "unique value", if its a number or a text string with a number is a non issue in my opinion. As said earlier it would be good if Alvim shared EPIC and backlog link then we could better design Wikidata....

- Salgo60 (talk) 12:58, 17 November 2020 (UTC)

This might be on the right track, but it is mainly the reasons, the arguments for the change, that needs to be documented here (not on Phabricator). If Wikidata allowed custom edit summaries, perhaps the links to the statements would enlighten someone, but as of now, we can only see what changed, not why. Ainali (talk) 22:25, 17 November 2020 (UTC)