updatecustomer.faces
This is the name of the page you will create in the next lesson to show only one row in the database, but with a faces extension instead of a jsp extension. The faces extension tells EGL that the file is to be treated as a JavaServer Faces file.
Leave the Label field blank. Without a label specified here, the link will use the text of the last name field itself as the text for the link.
If you see a link next to the {lastName} control named Link label, you did not place the link directly onto the {lastName} control. Click and try again. When the link is placed correctly, you see a chain link icon next to the {LASTNAME} text control.

The
link icon itself,
,
not the text control, must be selected before you can continue. You
have the link selected correctly if it is lightly shaded and the selection
box is surrounding the link icon and the text control. Do not double
click the link icon.
The Properties view is usually at the bottom of the workbench. If you can't find the Properties view, click .
If you can't find the Parameter tab, be sure you have clicked directly on the icon to select it.
CID
Select Page Data Object button. The Select Page Data Object window opens.The Select Page Data Object window looks like this:

Now, the value of the CID parameter for the link is bound to the value of the customer_id field. When the user clicks the link, the runtime code invokes the file updatecustomer.jsp and makes the customer ID number available to the onPreRender function of the related JSF handler.
In the next lesson, you will create the web page for the file updatecustomer.jsp, and later, you will set up the JSF handler to receive the parameter and to show only the customer with that ID number.