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 is confused by the rules about how many of each type of clause are required in a FLWOR structure. You tell her that in a FLWOR structure, the _____ clause is optional.
A. ?where
B. ?for
C. ?let
D. ?return
Answer: A
Computer Science & Information Technology
You might also like to view...
If you configure a virtual machine with dynamic memory, what is the default minimum RAM that will be configured?
A. 256 MB B. 1 GB C. None D. 512 MB
Computer Science & Information Technology
In the B-tree search algorithm we start from the end because if we searched from the beginning, we ____.
A. not be efficient B. would overshoot our target and have to back up C. not find the desired data D. would enter in an infinite recursive loop
Computer Science & Information Technology
Intrusion detection and prevention systems can deal effectively with switched networks.
Answer the following statement true (T) or false (F)
Computer Science & Information Technology
The IEEE ____ task group has been working on wireless QoS since May 2000.
A. 802.11e B. 802.11f C. 802.11g D. 802.11i
Computer Science & Information Technology