Help:Properties and types

Properties and types (datatypes) are the basic way of entering semantic data in Semantic MediaWiki. Properties can be viewed as «categories for values in wiki pages». They are used by a simple mark-up, similar to the syntax of links in MediaWiki:


 *  Property name::property value  

This statement defines a value for the property of the given property name. The page where this is used will just show the text for value and not the property assignment.

Creating properties

 * Property declaration informs about how to describe or constrain properties
 * Property naming shows some expected practices and naming conventions
 * List of datatypes that are provided by Semantic MediaWiki
 * Category vs. property tries to shed some light on both entity types and their usage pattern

Creating annotations
Annotations are generally referred to as assigning a value (e.g. 10, 1 Jan 1970, 1 km etc.) to a property hereby creating a value representation with a specific meaning (aka semantics).


 * In-text annotation explains in detail how to apply  Property name::property value   mark-up to a page
 * Extra annotation explains in detail how to add   mark-up to a page
 * Inverse properties illustrates how a property with datatype Page can invert its direction

Related topics

 * Property links  or  ) allows creating local-specific links to property pages.
 * Parser functions contains a list of provided by Semantic MediaWiki and can be used to add more complex data such as recurring events, use of a "silent" annotation, or add subobject