Help:Data type/fa
<languages /> Template:Information page انواع داده مشخص میکند اظهار نظر چطور باید رفتار کند و چه نوع دادهای بگیرد. انواع مختلف اظهار نظرها از انواع مختلفی از خصوصیتها استفاده میکند و انواع داده مختلفی دارند. هنگام ایجاد خصوصیتهای جدید یکی از چیزهایی که باید مشخص شود همین نوع داده است و غیر از نوع داده مشخص شده برای خصوصیت از انواع دیگر نمیتوان استفاده کرد. بنابراین پیش از اینکه یک خصوصیت مفید را بتوان ایجاد کرد باید برای آن برنامهریزی کرد.
Coordination of work on properties happens at Template:Ll.
Template:Properties by datatype Template:Clear
Properties by type
For a list of the properties that currently require each type of data type, see either:
Datatypes to link entities
Wikidata has 6 types of entities (Template:Entitytype, Template:Entitytype, Template:Entitytype, Template:Entitytype, Template:Entitytype and Template:Entitytype). For each entity type there exists a same-named data type that can be used to link entities of that type.
- ⧼datatypes-type-wikibase-item⧽ Template:Anchor
- Link to an Template:Ll. ([[Special:ListProperties/wikibase-item|Template:Int list of properties]])
- ⧼datatypes-type-wikibase-property⧽ Template:Anchor
- Link to a Template:Ll. ([[Special:ListProperties/wikibase-property|Template:Int list of properties]])
- ⧼datatypes-type-entity-schema⧽ Template:Anchor
- Link to an Template:Ll. ([[Special:ListProperties/entity-schema|Template:Int list of properties]])
The following data types are primarily meant for statements on Lexemes, which make up the Template:Ll of Wikidata.
- ⧼datatypes-type-wikibase-lexeme⧽ Template:Anchor
- Link to a Template:Ll. ([[Special:ListProperties/wikibase-lexeme|Template:Int list of properties]])
- ⧼datatypes-type-wikibase-form⧽ Template:Anchor
- For statements on lexemes that reference Template:Ll on other lexemes in order to indicate their relation. ([[Special:ListProperties/wikibase-form|Template:Int list of properties]])
- ⧼datatypes-type-wikibase-sense⧽ Template:Anchor
- For statements on lexemes that reference Template:Ll on other lexemes. ([[Special:ListProperties/wikibase-sense|Template:Int list of properties]])
String-based data types Template:Anchor
⧼wikibase-listdatatypes-string-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with string-datatype -- Special:ListProperties/string
Chain of characters, numbers and symbols that don't need to be translated into different languages or number formats. A string is not used for calculations.
- Template:Int Examples⧼colon⧽
- B123
- 90928390-XLE
- u29238
Maximum length is 1,500 characters on Wikidata, as defined with wmgWikibaseStringLimits in InitialiseSettings.php.
⧼wikibase-listdatatypes-monolingualtext-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with monolingualtext-datatype -- Special:ListProperties/monolingualtext
A string that is not translated into other languages. This type of string is defined once and reused in all languages. Typical use is a geographically localized entity name written in the local language, an identifier of some kind, a chemical formula or a Latin scientific name. See Template:Ll for information about the language codes available for monolingual text values and how to request support for additional language codes. (Note that monolingual text also implies a single script system, which can make the string somewhat problematic.)
Maximum length is 1,500 characters on Wikidata, as defined with wmgWikibaseStringLimits in InitialiseSettings.php.
⧼wikibase-listdatatypes-external-id-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with external-id-datatype -- Special:ListProperties/external-id
String that represents an identifier used in an external system. Will display as external link if a Template:Property is defined. See: External identifiers.
Maximum length is 1,500 characters on Wikidata, as defined with wmgWikibaseStringLimits in InitialiseSettings.php.
⧼wikibase-listdatatypes-url-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with url-datatype -- Special:ListProperties/url
A generalized "URL" that identifies some kind of external resource, perhaps a link to an external site of some kind, or an identifier used for lookup in some kind of specialized resource.
Maximum length is 1,500 characters on Wikidata, as defined with wmgWikibaseStringLimits in InitialiseSettings.php.
Data types to reference files on Commons
⧼wikibase-listdatatypes-commonsmedia-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with commonsMedia-datatype -- Special:ListProperties/commonsMedia
References to files on Wikimedia Commons. During entry in the textfield the "File" namespace on Commons will be searched for matching entries. These files can be used both to illustrate the concepts in Wikidata and as an actual property value for inclusion on Wikipedia.
- Template:Int Examples⧼colon⧽
- Wikidata-logo.svg
⧼wikibase-listdatatypes-geo-shape-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with geo-shape-datatype -- Special:ListProperties/geo-shape
Reference to map data file on Wikimedia Commons. During entry in the textfield the "Data" namespace on Wikimedia Commons will be searched for matching entries.
⧼wikibase-listdatatypes-tabular-data-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with tabular-data-datatype -- Special:ListProperties/tabular-data
Reference to tabular data file on Wikimedia Commons. During entry in the textfield the "Data" namespace on Commons will be searched for matching entries.
Data types for specific notations
Mathematical expression
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with math-datatype -- Special:ListProperties/math
Formatted string that displays as formula.
Current limitation: input text can't be queried on Query Service.
⧼wikibase-listdatatypes-musical-notation-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with musical-notation-datatype -- Special:ListProperties/musical-notation
Generated image in .png format that displays a musical score. Values for that data type are strings describing music following LilyPond syntax.
Example:
- Value string
\relative c' { c d e f | g2 g | a4 a a a | g1 |}, produces
- <score>\relative c' { c d e f | g2 g | a4 a a a | g1 |}</score>
Other data types
⧼wikibase-listdatatypes-quantity-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with quantity-datatype -- Special:ListProperties/quantity
A Quantity value represents a decimal number, together with information about the uncertainty interval of this number, and a unit of measurement. The attributes are:
- amount: the quantity's main value
- lowerBound: the quantity's lower bound (optional)
- upperBound: the quantity's upper bound (optional)
- unit: unit of measure item (empty for dimensionless values)
Internally, amount, lower bound and upper bound are strings; positive numbers are stored with a plus sign, though this will not be displayed. The representation of a quantity may not be longer than 127 characters; therefore, the maximal value of a quantity is 10^126-1.
Unit conversion is implemented based on Template:P. Most units with that property are normalized in the RDF export for the query service (October 2019).
The normalisation table is readable as a JSON file in the WMF Mediawiki repository.
- Template:Int Examples⧼colon⧽
- 762 (dimensionless)
- 2500 km (upper and lower bounds are not set, with unit)
- 1.03 ± 0.02 g (enter as nominal value +/- tolerance, representing a lower and upper bound, with unit). The tolerance is in some cases not shown at Wikipedia, only the nominal value, for example in Wikidata lists produced by the listeria bot.
⧼wikibase-listdatatypes-time-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with time-datatype -- Special:ListProperties/time
This data type stores a date in Gregorian or Julian calendar. See detailed structure.
- Template:Int Examples⧼colon⧽
- 2012
- 1780-05 (=May 1780)
- 1833-11-01 (=1st November 1833)
See Template:Ll for more.
⧼wikibase-listdatatypes-globe-coordinate-head⧽
- Template:Int type⧼colon⧽ Template:Datatype (Template:Datatype)
- Template:Int list of properties⧼colon⧽ Category:Properties with globe-coordinate-datatype -- Special:ListProperties/globe-coordinate
A geographical position given as a latitude-longitude pair (in gms or decimal degrees) for a given "globe" (any stellar body). Globe defaults to "Earth" (globe: http://www.wikidata.org/entity/Q2). A "precision" parameter describes the resolution of the source of the coordinate. Note that the coordinate system is assumed to be "WGS84" (Template:Q), which may not be suitable for less Earth-like bodies, and this is not configurable.
Currently, the Web UI of Wikidata doesn't expose all parameters of this data type. The value is visualized only as the coordinate, plus an embedded map if the globe is Template:Q. The precision can be modified in the edit mode. The globe is not visible, nor editable, in the item view. The full configuration is however visible in the history diff view (example).
When using the Web UI, the value saved will be an exact multiple of the precision chosen.
It is possible to edit the data in full via API. The CLI tool is one way to access the API. In this example Template:Q is given a coordinate on Template:Q using the globe parameter (used in Template:P):
wd ac Q520 P625 '{ "latitude": 18.4, "longitude": 226, "precision": 0.016666666666667, "globe": "http://www.wikidata.org/entity/Q111" }'
The globe.js script adds a UI to set the globe parameter of Template:P.
Bots such as LocatorBot may detect when the globe parameter of Template:P is not set according to Template:P. Adding Template:P and waiting for a bot to update the coordinate globe is an accepted workaround.
Technical details
In the Template:Ll format each value is represented by "datatype": <datatype>, "datavalue": {"type": <type>, "value": ...}, where the representation of the value depends on the type.
In the Template:Ll format data types are represented by the RDF name in the following table prefixed with http://wikiba.se/ontology# (or the wikibase: prefix in case of the RDF dumps). Note that this prefix is also available in the Template:Ll, so for example Template:Quickquery will return all properties of data type String.
{{#invoke:datatypes|overviewTable}}
Limitations
- Template:Datatype doesn't support time of day. phab:T57755
- Template:Datatype doesn't support Template:Q, e.g. you cannot state Template:St.
Pending data types
For none of the following dates of implementation are likely to be available. Existing datatypes may solve it in the meantime.
To be done
Duration
time in HH:MM:SS format.
To plan
Calculated property
A property calculated by Wikibase and added directly to items. Not in development plan.
Possible uses: number of statements on the item.
Celestial coordinates
A coordinate format for specifying positions of celestial objects. Not in development plan.
Current work-around: see Wikidata:Property proposal/Astronomical coordinates
Integer datatype
A quantity datatype for positive integer numbers. This was partially implemented by removing precision and creating Template:Q.
Monostring item
A datatype allowing descriptions in any language, but a single label. Not in development plan.
Current alternatives: lexemes
Alternative that is being evaluated: multilingual label replacing repeated labels
Multilingual text
A string that must be translated into other languages. Use might be an entity name on non-local form, that is translated into various languages and script systems. (Note that multilingual text also imply a lot of manual work during translation.). Actual purpose to be determined.
Multiline text
A string that may contain newlines.
Remote property
Properties in remote repositories are likely to be identified through a special field on existing entities, not a separate datatype.
Value series
A simplified way to store series of values for different points in time. Not in development plan.
Chess
Display strings in FEN notation as in Template:P directly as chessboards.
Hiero
Strings for display with WikiHiero. Strings in WikiHiero syntax are embedded in <hiero></hiero> to display. Samples on Talk:Q68101340 and Property_talk:P7383.
Phab request to do.
Combined human-readable and numeric id
Datatype to add numeric id and page title, e.g. of a MediaWiki page. Qualifier Template:P is sometimes added to property value with page titles. Some properties use the numeric value directly.
Wikibase statement
Datatype to reference a specific Wikidata statement.
Regular expressions
Datatype to store regular expressions (regex). These are currently stored as strings or monolingual text, e.g. Template:P, Template:P.
IP address ranges
Datatype to store address ranges and simplify querying them.
Data types that will never be implemented
Boolean
Declined. Suggested alternative: item-datatype.
Changing datatype
A property in "string" datatype may be converted to "external identifier" datatype by a system administrator. To propose such a change, you may start a discussion at the talk page of the property or Project chat. After a consensus, a request may be made in Contact the development team. You should read previous discussion if you want to convert a property created before 2016.
Other changes of data type requires creating a new property and deleting the old one. You should use Properties for deletion for such requests.