A pattern comprising literal characters and the special characters asterisk (*) (representing zero or more characters) and question mark (?) (representing one and only one character). You can specify more than one pattern.
A URN starting with urn:, for example, urn:uuid:4a6741e7-4be1-4cfb-960a-e5520356c4fd. You can specify more than one URN. The URN must be the unique identifier of the object, not the logical identifier.