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Con una declaración se puede almacenar una afirmación que refleje sobre el mundo real. Se hace conectando elementos con propiedades a otros elementos o contenido de Wikimedia Commons. Esto suena más complicado de lo que realmente es. Aquí tienes un ejemplo: podrás crear una propiedad "hijo". A continuación, puedes añadir una declaración al elemento de Marie Curie utilizando esta propiedad para decir que ella es la madre de Irène Joliot-Curie y Ève Curie. A continuación, puedes crear la propiedad "retrato" (imagen). Con esto puedes agregar otra declaración al elemento de Marie Curie enlazándolo a un retrato suyo en Wikimedia Commons. A todas estas declaraciones les puedes añadir referencias para darles validez. Puedes ver el resultado de esto en la captura de pantalla.

Language item property Valor
inglés Marie Curie occupation physicist
alemán Marie Curie Tätigkeit Physiker
francés Marie Curie occupation physicien
polaco Maria Skłodowska-Curie zajęcie fizyk
español Marie Curie ocupación físico
  Q7186 P106 Q169470


In order to include information about the occupation of Marie Curie in Wikidata, you would need to add a statement to the item for Marie Curie, Marie Curie (Q7186). Using the property, occupation (P106), you could then add the value physicist (Q169470). You could also add the value chemist (Q593644). Note how both chemist and physicist have their own pages in Wikidata, thereby allowing Marie Curie to be linked to these items.

Language independent general principles

Overview of a Wikidata statement
example of a simple statement consisting of one property-value pair
example of a statement consisting of multiple values for one property
example of a strong Wikidata statement consisting of one property-value pair, qualifiers, and a reference

A statement consists of a property-value pair, for example, "location: Germany."

The property in a statement describes the data value, and can be thought of as a category of data like "color", "population," or "Commons media" (files hosted on Wikimedia Commons). The value in the statement is the actual piece of data that describes the item.

Statements can also be expanded upon, annotated, or contextualized with the addition of optional qualifiers, references, and ranks.


Antes de crear una nueva propiedad, debe ser discutida en Wikidata:Property proposal. Al cabo del tiempo, cuando haya algunos apoyos y ninguno o pocos oponentes, la propiedad debe ser creada mediante property creator o un administrator

For more information on how to use properties, please see Wikidata:Properties.


Valores múltiples

If an item by nature can have properties with multiple values (like children of a person or official languages of a country), it is perfectly acceptable to add them.

If on the other hand an item ideally should have only one value (like the population of a city) but has multiple values (for example, because different sources report different numbers), all values may be added and additional qualifiers should be used. Qualifiers are used to further describe or refine the value of a property given in a statement. Please see Help:Qualifiers for more information.

Unknown or no values

There are times when an item has either no value or an unknown value for a given property. Depending on the property, these data values still provide important information about an item and should still be recorded in Wikidata. For example, we could say that Elizabeth I of England (Q7207) had no value for the child (P40) property, which is quite different than not recording anything at all. We could also say that William Shakespeare (Q692) has an unknown value for the date of birth (P569) property.

The majority of values in Wikidata will be custom values, and are entered in the usual fashion. Unknown values and no values are added to statements by clicking on the icon beside the value field that looks like this Wikidata snak icon.png.

Quantitative values

When adding quantitative values the following constraints should be noted. The largest positive integer number that Wikidata allows is 9e124+-0 and the largest negative number -9e124+-0. For floats one additional decimal place is supported 9,9e124+-0, but 9,91e124+-0 is not possible. The smallest positive and negative numbers are 1e-124+-0 and -1e-124+-0. For floats the exponent can only be 123 making this the smallest positive and negative floats: 1.0e-123+-0 and -1.0e-123+-0 (Note that the zero will be preserved as an indicator of the precision of the value. Compare this to entering 1e-123+-0).


Wikidata is not a database that stores facts about the world, but a secondary knowledge base that collects and links to references to such knowledge. This means that Wikidata does not state what the population of Germany actually is; it simply provides the information on what the population of Germany is according to a specific source, such as the The World Factbook (Q11191) CIA World Factbook.

As such, most statements should be verifiable by referenceable sources of information like a book, scientific publication, or newspaper article. In Wikidata, references are used to point to specific sources that back up the data provided in a statement. For more information, please see Help:Sources.


En caso de conflictos, un consenso determina el valor de una propiedad; sin embargo, otros puntos de vista (POV) pueden ser añadidos con un calificador. Un ejemplo puede ser la (in)dependencia de Taiwán. El punto de vista consensuado, en caso de existir uno, debe ser indicado por un calificador adecuado.

In case of disputes, community consensus determines the value of a property, however other points of views can be added as additional values as long as they include a source and appropriate qualifiers. Ranks can also be used; if a consensus exists, it should be indicated by a preferred rank. For more information on ranks, please see Help:Ranking.

Please note that disputes should be discussed on the item's discussion page. Edit warring over values is not acceptable.

Páginas de desambiguación y otras páginas de Wikipedia que no tratan sobre cosas individuales

When a Wikidata item refers to a Wikimedia page itself rather than to the subject of the Wikimedia page, the instance of (P31) property should be used to identify the type of page. This includes Category, Template and other pages outside the main namespace.

Disambiguation pages should have only one property: Property:P107 (tipo principal, GND) with only the value Q11651459 (nombre, desambiguación).


elemento: Madonna (Q1564372)
instancia de: Wikimedia disambiguation page (Q4167410)
elemento: list of lighthouses in Iceland (Q3253135)
instancia de: Wikimedia list article (Q13406463)

Where a Wikipedia page covers more than one concept, object or thing use 'has part (P527)' to link to separate Wikidata pages for each of the individual concepts, objects or things.

Criterios de exclusión

Wikidata statements should be sourced and contain trustworthy neutral references.

No están incluidos:

Creando una declaración

Las declaraciones se crean en la página de un elemento -en este caso a Marcel Bouix (Q16775650)- del siguiente modo:

Recorra la página hasta la sección de Declaraciones
Hacer clic sobre el botón "añadir" que aparece al final de la sección.
En el nuevo campo que aprece comience a tipear la propiedad.
Seleccionar la propiedad entre las opciones que aprecen como sugerencia.
In the new field that appears to the right of the property, start typing the value. When done click "save"
The final statement will appear like this. To change or delete it, click "edit"

To add qualifiers, sources, or ranks, please see the appropriate help documentation listed at the bottom of the page.

Véase también

For related Help pages, see:

  • Help:Properties, which explains what properties are and what rules they follow
  • Help:Sources, which explains what sources are and what rules they follow
  • Help:Qualifiers, which explains what qualifiers are and what rules they follow
  • Help:Ranking, which explains what ranks are and what rules they follow

For additional information and guidance, see:

  • Project chat, para discutir todo o algún aspecto de Wikidata.
  • Wikidata:Glossary, el glosario de término utilizados y otras páginas de ayuda.
  • Help:FAQ, preguntas frecuentes contestadas por la comunidad de Wikidata.
  • Help:Contents, el portal de ayuda que dispone de toda la documentación disponible para Wikidata.