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The Iterate connection can be used to loop on files contained in a directory, on rows contained in a file or on DB entries.
A component can be the target of only one Iterate connection. The Iterate connection is mainly to be connected to the start component of a flow (in a subJob).
Some components such as the tFileList component are meant to be connected through an iterate connection with the next component. For how to set an Iterate connection, see Iterate connection settings.
globalMap.get("key")to create your own global variables and then retrieve their values in your Jobs, especially after an Iterate connection with the parallel execution option enabled.