Creating a Table from Documents
With this method of data source creation, you can build a data source in which the fields correspond directly to one or more response forms. You typically use such a data source as a response table connected to a form by rules.
Any form input fields and $text$ sequences found in the selected documents will be used as the basis for constructing your new data source.
Tip: To modify the schema of the data source later, click 
next to its name in the Folders list, and select Change Schema from the pop-up menu.