Name
xs:selector
Attributes
xpath
An XPath location path used by the
xs:unique
,xs:key
, orxs:keyRef
element containing thexs:selector
xs:selector
is used
within xs:unique
, xs:key
, or xs:keyRef
elements and stores an XPath
location path. These expressions use a very simplified subset of
XPath, permitting only abbreviated syntax for the child axis to be
used. In place of explicit element names, the *
expression may be used to match any
name, and the prefix:*
expression to match any name in a given namespace. //
may be used for any descendant, but
only at the beginning of the XPath. No
predicates or attributes may be used. Multiple location paths may
be stored in the xpath
attribute, each separated by a vertical bar.
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