syntax - Types in XQuery -
the node type can specified node()
the string type can specified xs:string
why sytax node not xs:node
?
there 2 kinds of data types in xquery: xml native data types , atomic values.
atomic data types borrowed xml schema, , put them in namespace gets xs
prefix assigned, defined in xquery specs.
i'm not sure parentheses of xml native data types, guess origin xpath's node tests.
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