A property-value pair, e.g. representing a feature of a product or place...
|Properties of PropertyValue||Expected Type||Description|
|The upper value of some characteristic or property.|
|A technique or technology used in a (or , ),
corresponding to the method used for measuring the corresponding variable(s) (described using ). This is oriented towards scientific and scholarly dataset publication but may have broader applicability; it is not intended as a full representation of measurement, but rather as a high level summary for dataset discovery. |
For example, if is: molecule concentration, could be: "mass spectrometry" or "nmr spectroscopy" or "colorimetry" or "immunofluorescence".
If the is "depression rating", the could be "Zung Scale" or "HAM-D" or "Beck Depression Inventory".
If there are several properties recorded for some given data object, use a for each and attach the corresponding .
|The lower value of some characteristic or property.|
|A commonly used identifier for the characteristic represented by the property, e.g. a manufacturer or a standard code for a property. propertyID can be (1) a prefixed string, mainly meant to be used with standards for product properties; (2) a site-specific, non-prefixed string (e.g. the primary key of the property or the vendor-specific id of the property), or (3) a URL indicating the type of the property, either pointing to an external vocabulary, or a Web resource that describes the property (e.g. a glossary entry). Standards bodies should promote a standard prefix for the identifiers of properties from their standards.|
|The unit of measurement given using the UN/CEFACT Common Code (3 characters) or a URL. Other codes than the UN/CEFACT Common Code may be used with a prefix followed by a colon.|
|A string or text indicating the unit of measurement. Useful if you cannot provide a standard unit code for .|
|The value of the quantitative value or property value node.|
|A pointer to a secondary value that provides additional information on the original value, e.g. a reference temperature.|
|Properties inherited from||Expected Type||Description|
|An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally.|
|An alias for the item.|
|A description of the item.|
|A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.|
|The identifier property represents any kind of identifier for any kind of , such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See for more details.|
|An image of the item. This can be a or a fully described .|
|Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See for details.|
|The name of the item.|
|Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.|
|URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.|
|A CreativeWork or Event about this Thing.|
|URL of the item.|