How to find out of control data which doesn't layout components?

Hello
work in Jdev 11.1.2.3
After drag and drop of data control in the page designer, how do I know what control of data to come from the layout component (for example, a field in implementing shape)?
--i can not find data related information control in the palette of the component layout property.

Kind regards.

The information in the file of the page definition .
Select the field in the page and then click the connection tab.

Tags: Java

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