We started to use the vocabulary from Schema.org and we are looking for a simple and effective way to reference an object by its identifier or a unique URL.
For example, in the Organization type there is a property employee which refers to Person. We would like to be able to refer to it using a unique identifier instead of the whole object.
What would be the best solution according to Schema.org?
If the Person (resp. the name-value pairs) is defined on the same page, you could use the itemref attribute, containing reference to the id(s):
Elements with an
itemscopeattribute may have anitemrefattribute specified, to give a list of additional elements to crawl to find the name-value pairs of the item.
With Microdata’s itemid attribute you can specify a URL that identifies an item.
However, Microdata requires that vocabularies explicitly specify support of itemid, which Schema.org hasn’t done yet.
