How to use loop in BPEL Process

Hi friends
I have done a bpel process which picks up XMl file using File Adapter and imports the data from the XMl file to oracle db table using DB adapter....
But here the XMl file which have only one row ..if i want insert the XML file which have two or more rows i want to use loop in my BPEL process how to use the loop in my bpel process ?
In my BPEL process i have used receive ,transform , and invoke activity where can i use loop in my BPEL process
Advance Thanks
AT

Hi Friend thanks
Hi Oracler how to make use of transform activity and use a for each in it.?
iam not getting i try can u please explain some more in brief
Thanks
AT

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