Agnes has been using XQuery to design queries using path expressions. Her next project will involve multiple source documents and require more complicated criteria. She has heard that a FLWOR structure could be effective for such cases, and comes to you for assistance in developing a FLWOR structure query.
Agnes has heard that one of the clauses in a FLWOR structure is used to iterate through a sequence of nodes or atomic values. You tell her that she is describing the _____ clause.
A. ?for
B. ?let
C. ?where
D. ?return
Answer: A
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a) padding
b) margin
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