View source for Help:Wikidata

{{short description|Page of the Wikipedia help on Wikidata}}
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This page provides '''help, with the most common questions''' about using Wikidata in Wikipedia and templates, as described below.

You can also search all Wikipedia's help pages using the search box below, or browse the '''[[Help:Menu|Help&nbsp;menu]]''' or the '''[[Help:Directory|Help directory]]'''.
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[[File:Wikidata-logo-en.svg|thumb|The Wikidata logo]]
'''Wikidata''' is a [[Wiki|collaboratively edited]] [[knowledge base]] hosted by the [[Wikimedia Foundation]]. It is a common source of [[open data]] that Wikimedia projects such as [[Wikipedia]] can use, and anyone else, under a [[public domain]] license. 

In this page there is a basic explanation about how to use Wikipedia Tools and Language links with Wikidata, in an easy language for newbies, in the first part; and, in the second, about how to use [[Wikidata]] elements for Wikipedia templates.

== Access from Wikipedia and links==
[[File:Interlanguage links provided by WikiData.png|thumb|The link to edit the Wikidata page, in grey, in the lateral pane.]]
From a Wikipedia page, you can go to the link "Wikidata item", using "Tools" in the lateral pane (in the left), to see and edit it. Also in Tools, there is another link to "page information", where is "Wikidata item ID", that contains the QID (for example: [[d:Q171|Q171]] or "None").

QID (or Q number) is the unique identifier of a data item on Wikidata, comprising the letter "Q" followed by one or more digits. It is used to help people and machines understand the difference between items with the same or similar names, e.g., there are several places in the world called London and many people called James Smith. This number appears next to the name at the top of each Wikidata item. 

You can go to the page of the same item in the Wikimediasphere (that is, Wikimedia sister projects) using the links under "In other projects", also in the lateral pane. 

Finally, you can go to other Wikipedia language links of the item, clicking in "Languages" in the lateral pane. In a similar way to clicking "Wikimedia item", you can use "Edit links" there.

==Templates==
{{Wikipedia how-to}}

Here, we are going to see how to use data from [[Wikidata]] in enwiki [[help:template|templates]].

===Data model===
{{Main|Data model|d:Wikidata:Glossary#Names_and_projects|l2=Wikidata:Glossary}}
How to link to Wikidata items and QID from Wikipedia:

* d:item = en:article title
:d:Q-number = identity for enwiki:article title
::Example:
::(todo).

===Template building: using data from Wikidata===
{{Main|Help:A quick guide to templates|Wikipedia:Lua}}Inclusion of data values may be achieved by using mediawiki-like [[WP:MAGICWORD]]<nowiki/>s.

====Simple====
Fetching {{q|P31}} for this page; and {{q|P509}} for {{q|Q42}}:
; Using #property
: {{demo inline|<nowiki>{{#property:P31}}</nowiki>}}
: {{demo inline|<nowiki>{{#property:P509|from=Q42}}</nowiki>}}
Automatic links can be created where they exist:
; Using #statements
: {{demo inline|<nowiki>{{#statements:P31}}</nowiki>}}
: {{demo inline|<nowiki>{{#statements:P509|from=Q42}}</nowiki>}}

====By module or template====
[[File:Wikidata label field.png|thumb|upright=1.5|Wikidata screenshot - label field highlighted]]
[[File:Changing-label.png|thumb|upright=1.5|Changing item label in Wikidata, from "elephant" to another arbitrary one (you can see ''asdfasdfasdf'' before the Q).]]
{{See also|Wikidata:Help:Label}}
To fetch data from Wikidata with or without a link to the connected Wikipedia article and with many other features:

* {{tl|wikidata}}
*{{tl|wd}} , its shortcut

For example: {{nowrap|{{tnull|{{{prename|}}}{{lcfirst:{{ROOTPAGENAME}}}}|label|raw|{{{extraparams|}}}}}}}
returns the Q-identifier (also known as QID or identifier) of the Wikidata item connected to the current page (e.g. "Q55").

Label (also name) is the main name given to identify an entity (i.e. an item or a property). E.g.: the item with the item identifier [[d:Q7378]] has the English label "elephant". Every entity has exactly one label in a given human language. Labels do not need to be unique. Descriptions and aliases are used to distinguish between entities with the same label. Wikidata pages do not have labels, but titles. It's a type of term. 

Raw means that will return the Q-identifier or P-identifier instead of the regular label.

==== In infoboxes ====
[[Module:WikidataIB]] was developed to provide the tools necessary for drawing information from Wikidata into infoboxes on Wikipedia. It allows infobox fields to draw information from Wikidata while ensuring that local values take priority and that unsourced information is filtered out by default. It also gives the infobox designer the opportunity to make the enabling of Wikidata controllable on a per-article basis ("opt-in").

;Example of conversion:
: An infobox like {{tl|Infobox writer}} has a field for "Occupation" with its value defined like this: <code><nowiki>| data7 = {{{occupation|}}}</nowiki></code>
: That could be updated to bring information from Wikidata using the <code>getValue</code> function from the module, which has a template shortcut {{tl|wdib}}. Occupation is P106:
: <code><nowiki>| data7 = {{wdib |fwd={{{fetchwikidata|}}} |P106 |qid={{{qid|}}} | {{{occupation|}}} }}</nowiki></code>
: That would import the sourced occupations of the connected page (or any other page if qid is set) unless the local parameter {{para|occupation}} is given a value in an article, when that value takes preference over anything in Wikidata. But this does not happen until {{para|fetchwikidata|ALL}} is set in the infobox of the article.
: For example, for {{q|Q42}}, we would get:
: {{wdib |fwd=ALL |P106 |qid=Q42 }}
: The pen icon is automatically added at the end of each field that fetches its value from Wikidata and gives a direct link to the place on Wikidata where the value(s) came from. It can be suppressed by setting {{para|noicon|true}}.
: Although the values are linked, there is a string-handling function that will capitalise the first letter, regardless of whether the value is linked or is part of a list:
: {{demo inline|<nowiki>{{#invoke:String2 |ucfirst | {{wdib|fwd=ALL|P106|qid=Q42}} }}</nowiki>}}
: Examples of some of the functionality can be found at [[Module talk:WikidataIB/testing]].

===Tracking===
{{See also|d:Help:Properties|l1=Help:Properties}}
;Tracking categories
{{See also|Category:Wikidata tracking categories}}
* In {{cl|Wikidata}} there is
: {{cl|Wikidata tracking categories}}

;Tracking & using

To track the data in or missing from one or more Wikidata properties; or to indicate that template or module uses a Wikidata property or properties, where available.

: {{tl|Tracks Wikidata}}
: {{tl|Uses Wikidata}}

A property (also attribute) describes the data value of a statement and can be thought of as a category of data, for example "color" for the data value "blue". Properties, when paired with values, form a statement in Wikidata. Properties are also used in qualifiers. Properties have their own pages on Wikidata and are connected to items, resulting in a linked data structure.

== See also==
* {{tl|Wikidata}}
* [[:d:Wikidata:How to use data on Wikimedia projects]]
* [[:d:Wikidata:Introduction]]
* [[:d:Wikidata:Tours]]
* [[Wikipedia:Wikidata]]
* [[Wikipedia:Short description]]