The Join function synchronizes two data sources by starting a joined iteration on both of them. One of the data sources is called a parent-data-source and the other one a child-data-source. When a new record is received from the parent data source, join function iterates through the child data source until a condition is satisfied.

 

In the following example, a list of departments each employee worked in is created:

 

 

 

Note:

 

Output:

 

 

       <?xml version="1.0" encoding="UTF-8" standalone="yes"?>

       <ns:root xmlns:ns="http://www.tempuri.org/XML">

               <ns:emp first-name="John" last-name="Brown" department="Accounting"/>

               <ns:emp first-name="John" last-name="Brown" department="Sales"/>

               <ns:emp first-name="John" last-name="Brown" department="Development"/>

               <ns:emp first-name="John" last-name="Brown" department="Accounting"/>

               <ns:emp first-name="Mary" last-name="Jane" department="Accounting"/>

               <ns:emp first-name="Mary" last-name="Jane" department="Sales"/>

               <ns:emp first-name="Mary" last-name="Jane" department="Development"/>

       </ns:root>