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== Migration from Wikibase Registry ==

Here is my report on the migration of data from Wikibase Registry to Wikibase World.

First, the reasons why I am doing this to begin with. Wikibase Registry was first set up in 2018, before WBStack or Wikibase.Cloud. It was set up as a one-off Wikibase on a Wikimedia Cloud virtual machine, where it has fallen behind on software updates, including critical security updates. The restrictive approach to editing meant that as Wikibases were created no one was around to update the wiki, causing it to fall behind with reality. And on top of all that, the query service stopped working.

Rather than invest effort in keeping this separate installation of Wikibase online when we have Wikibase.Cloud, I have taken the initiative to move the data to Wikibase.Cloud (under a custom domain name) and update it with present information. I also created a [https://phabricator.wikimedia.org/P49426 mapping between the wikis] that will be used to maintain redirects from the registry to Wikibase World. This means links to entities on the Wikibase Registry will continue to work, provided they have been migrated to the new wiki.

Hopefully this breathes new life into the project. Now that it's easier than ever to create a Wikibase we should also make it easy for people to add theirs to the list.

[[User:Harej|Harej]] ([[User talk:Harej|talk]]) 18:40, 15 June 2023 (UTC)

The old domain "wikibase-registry.wmflabs.org" now redirects to this one, with entities [https://phabricator.wikimedia.org/P49426 mapped] between the old and new Wikibases. A copy of the previous Wikibase will be available at https://wikibase-registry-archive.wmcloud.org/wiki/Main_Page until 1 July. [https://archive.org/details/wikibase-registry-final-2023-06-16 Final RDF and XML dumps] have been uploaded to the Internet Archive.

[[User:Harej|Harej]] ([[User talk:Harej|talk]]) 18:24, 16 June 2023 (UTC)

I published a longer [https://harej.co/posts/2023/09/ditching-self-hosted-wikibase-migrating-data-wikibase-cloud-case-study-wikibase-registry/ case study] on my personal website.

[[User:Harej|Harej]] ([[User talk:Harej|talk]]) 00:50, 7 September 2023 (UTC)

The old Wikibase Registry VM has now been permanently deleted, leaving the dumps previously uploaded to the Internet Archive (and whatever may have been grabbed by the Wayback Machine). [[User:Harej|Harej]] ([[User talk:Harej|talk]]) 17:29, 9 July 2024 (UTC)

== New property: Wikibase tool used ==

What about creating a new property "Wikibase tool used" which could hold the names of tools like "Query Service", "QuickStatements", or "Cradle" to name some of them? Thoughts, [[User:Harej|Harej?]] --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 13:46, 6 September 2023 (UTC)
: Sounds reasonable to me [[User:Kghbln|Kghbln]]. We could then have URL as a qualifier for specific locations of those tool instances. This could replace [[Property:P11]]. [[User:Harej|Harej]] ([[User talk:Harej|talk]]) 00:49, 7 September 2023 (UTC)
:: I believe we have an agreement on a new property. :) --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 09:06, 7 September 2023 (UTC)
::: [[User:Kghbln|Kghbln]], I generalized from "Wikibase tool used" to [[Property:P37|wiki tool used]], and replaced existing uses of [[Property:P11]] with new P37 statements. [[User:Harej|Harej]] ([[User talk:Harej|talk]]) 18:39, 7 September 2023 (UTC)
:::: Cool. Thanks a bunch. --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 06:44, 8 September 2023 (UTC)

== Wikibase Query Service ==

When it comes to the [[Item:Q285|Wikibase Query Service]] I [[Special:Diff/2109/2117|removed]] the [[Property:P7|query service UI]] and [[Property:P8|query service SPARQL endpoint]] annotations as statements and added them as qualifiers for the [[Item:Q283|wiki tool]]. I guess this is better. --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 07:49, 8 September 2023 (UTC)
: I support designating [[Property:P7|P7]] and [[Property:P8|P8]] as qualifiers to a [[Property:P37|P37]] statement with value of [[Item:Q285|Wikibase Query Service]]. In that instance you don't need [https://wikibase.world/w/index.php?title=Item:Q3&diff=prev&oldid=2121 a P1 qualifier]. [[User:Harej|Harej]] ([[User talk:Harej|talk]]) 15:49, 8 September 2023 (UTC)
:: Thanks for the feedback. Let's continue like this. --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) PS I left P! in there for consistency reasons. However, it indeed duplicates information.

== Inception date ==

Discussion relocated from [[Special:Diff/2360/2361|Item talk:Q1]].

Even though people celebrate October 29, 2012 as the inception data of Wikidata, I changed the date to October 25, 2012 on this wiki. Why? For consistency reasons: It is impossible to figure out the correct inception dates in retrospect other than checking for the first edit on the wiki. I believe this is the only date that can consistently be determined. Cheers --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 09:02, 16 September 2023 (UTC)
: I think that is correct so far as we define inception date to be the date the wiki went online for the first time, ever. If revision 1 is dated to October 25 then that would be the inception date, even if the official "opening" was a few days later. Could we have both values as claims on the item, with one value qualified as the "observed" birthday? [[User:Harej|Harej]] ([[User talk:Harej|talk]]) 16:22, 17 September 2023 (UTC)
:: To additionally have an "observed" birthday makes sense. Not sure how to best name it. We will not be able to fill it in most cases, though. --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 16:26, 18 September 2023 (UTC)
::: Hmm, inception day and birthday as a pair could be good enough, I believe. --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 16:27, 18 September 2023 (UTC)
:::: I was being bold and created [[Property:P38|service entry]]. In the end, I did not like naming this birthday. --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 11:12, 21 September 2023 (UTC)
: We probably also need a date defining when Wikibase started being used for the wiki. I can imagine a wiki that only added Wikibase and friends sometime after its inception and birthday. In this case, the date should be when they started using the software, i.e., the day the first item or property was created. This date can also be determined for every instance using Wikibase. If not, they installed the software but never used it. Also good to know. --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 16:32, 18 September 2023 (UTC) PS [[Item:Q106|Zetawiki]] Is a good example for the latter case.

== Failing query ==
What is my mistake with this search: https://tinyurl.com/yw88co6y
--[[User:Olaf Simons|Olaf Simons]] ([[User talk:Olaf Simons|talk]]) 18:25, 11 October 2023 (UTC)
: Hi, I think you tried to retrieve all Wikibase instances recorded on this wiki. Use the first one provided in this [[Project:Home#Browse|section of the homepage.]]. Cheers --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 07:28, 12 October 2023 (UTC) PS I placed your question in a new section since it appeared unrelated.

== Wikibase.Cloud discovery ==

[https://www.wikibase.cloud/discovery New listing] of Wikibases hosted on Wikibase.Cloud. Useful source for new entries. [[User:Harej|Harej]] ([[User talk:Harej|talk]]) 19:53, 12 October 2023 (UTC)

: The top 24 Wikibase instances on Wikibase Cloud by the number of pages (10,000+) with a minimal set of data (instance of, URL, availability status, and host) are now on wikibase world, except for "pbsandbox." --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 14:51, 21 October 2023 (UTC)

== System requirements ==

What are the system requirements for installing Wikibase? Could it run on an Android Oneplus 11 smartphone with 16 GB of RAM? [[User:Jkintree2|Jkintree2]] ([[User talk:Jkintree2|talk]]) 23:57, 8 March 2024 (UTC)
: I suggest asking over at the [[mw:Talk:Wikibase|Wikibase talk page on mediawiki.org]]. Cheers --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]]) 13:49, 11 March 2024 (UTC)

== Entity resolution ==

If the same entity has been entered in multiple Wikibases, and has a different QID in each Wikibase, how are the items merged? [[User:Jkintree2|Jkintree2]] ([[User talk:Jkintree2|talk]]) 23:41, 11 March 2024 (UTC)
: You can do in using the [[Property:P4|exact match property.]]. The best place to get information and to ask such questions is the [https://www.wikidata.org/wiki/Wikidata:Community_portal community portal at Wikidata] as the mother of all wikibases. Cheers --[[User:Kghbln|Kghbln]] ([[User talk:Kghbln|talk]])

Your answer is appreciated. The exact match property can link items in multiple Wikibases. That's an elegant solution. If the different Wikibases are running on the same cloud hosting service, the performance for the merged Wikibases could be good.  [[User:Jkintree2|Jkintree2]] ([[User talk:Jkintree2|talk]]) 19:51, 12 March 2024 (UTC)

== Display order of properties on rendered pages ==

I noticed that there is no hard-defined ranking order of included properties on pages.  They are merely listed in order which I add new properties for each item.  This is very different to the Wikimedia Wikidata site, which has a rigid and display order for included properties, irrespective of the order each property value was added to said item.  Is there any way for Wikibase World to mimic the regimented display order of properties similar to Wikimedia Wikidata?  Regards.  [[User:Hoof Hearted|Hoof Hearted]] ([[User talk:Hoof Hearted|talk]]) 20:08, 29 June 2024 (UTC)