List of datatypes


Table of Contents

Using different datatypes, properties can be used to describe very different kinds of values. A complete list of all 0 datatypes provided by Semantic MediaWiki and 0 provided by other semantic extensions is available from special page "Types". The available 0 datatypes are:

Overview[edit]

Enumerations and allowed values[edit]

In addition to assigning a datatype to a property, you can also restrict the allowed values to a given set (like a whitelist for property inputs). This is done by using the Template:SpecialProperty to enumerate its permitted values. This works for every datatype.

Units[edit]

Template:DataType allows a unit after the numeric value to distinguish values (e.g. "30 miles" versus "42 km"). To support automatic conversion and multiple unit formats, one needs to declare each supported unit as described in the documentation on custom units. Property values are then automatically converted between different units, so that users are free to use their preferred unit in each article yet still query and compare with property values in other articles.

Example values and formatting[edit]

Datatype Property Example value Query display Query display using #- (plain)
Annotation URI Property:Has annotation uri https://www.semantic-mediawiki.org https://www.semantic-mediawiki.org https://www.semantic-mediawiki.org
Boolean Property:Has boolean true true true
Code Property:Has code
Code
is preserved but variables are expanded, e.g:
Help:List of datatypes
is displayed as the name of this page instead of FULLPAGENAME
Code
is preserved but variables are expanded, e.g:
Help:List of datatypes
is displayed as the name of this page instead of FULLPAGENAME
Code
is preserved but variables are expanded, e.g:
Help:List of datatypes
is displayed as the name of this page instead of FULLPAGENAME
Date Property:Has date 2015-05-22T17:32 22 May 2015 17:32:00 2015-05-22T17:32:00
External_identifier Property:Has SMW issue ID 1218 1218 1218
EMail Property:Has email address president@whitehouse.gov president@whitehouse.gov president@whitehouse.gov
Geographic coordinate Property:Has coordinates 32° 42' 54.00" N, 117° 9' 45.00" W 32° 42' 54.00" N, 117° 9' 45.00" W 32° 42' 54.00" N, 117° 9' 45.00" W
Keyword Property:Has keyword TestKeyword TestKeyword TestKeyword
Number Property:Has number 47000.11 47,000.11 47000.11
Monolingual text Property:Has mlt Monoglingual text in english (en)Einsprachiger Text auf Deutsch (de)Texte monoglinguel en français (fr) Monoglingual text in english (en), Einsprachiger Text auf Deutsch (de), Texte monoglinguel en français (fr) Monoglingual text in english (en), Einsprachiger Text auf Deutsch (de), Texte monoglinguel en français (fr)
Page Property:Has example Semantic MediaWiki Semantic MediaWiki Semantic MediaWiki
Quantity Property:Area 1052km²406.18 sqmi <br /> 1,052.00 km²406.18 sqmi <br /> 1052.00 km²
Reference Property:Has Wikidata reference Q190087;https://en.wikipedia.org/wiki/Data_type Q190087;https://en.wikipedia.org/wiki/Data type Q190087;https://en.wikipedia.org/wiki/Data type
Record Property:Has conservation status Dodo (Extinct, 2012) Dodo (Extinct, 2012) Dodo (Extinct, 2012)
Telephone number Property:Telephone number +1-800-225-5288 +1-800-225-5288
1-800-225-5288
Temperature Property:Has temperatureExample 23°C296.15 K <br />73.4 °F <br />533.07 °R <br /> 296.15 K23 °C <br />73.4 °F <br />533.07 °R <br /> 296.15 K
Text Property:SomeProperty Did you create the page for Tokyo 東京 ? Yes ✓ Did you create the page for Tokyo 東京 ? Yes ✓ Did you create the page for Tokyo 東京 ? Yes ✓
URL Property:Has_URL http://www.whitehouse.gov http://www.whitehouse.gov http://www.whitehouse.gov

Handling in earlier versions[edit]

Up to Template:Release, datatypes had individual wiki pages in their own namespace called "Type". This was abolished to reduce the number of extra namespaces. You may still find expressions like "Type:Number" in places in this wiki. Both writings are accepted for assigning a datatype to a property.

In very early versions of SMW up to Template:Release, properties with datatype Template:DataType were known as relations and only those used double colons (::) as the separator between property name and link text. All other properties (numbers, text, etc.) were known as attributes and had to use colon equals (:=) as the separator.

See Upgrading from SMW 0.7 to SMW 1.0 for other changes in SMW 1.0; if you're still using the older version of SMW, see semweb:Help:Annotation (SMW0.7) for documentation of Annotations in version 0.7.

Template:Doc.info

🖨 🚪