Multiple choice

Three possible credit ratings are assigned to customers: Poor, Good, and Excellent (represented numerically by 1, 2, and 3). A RATING column was added to the CUSTOMERS table and the DBA has to add an item to his form so that credit ratings can be recorded. To restrict data entry clerks to one of these three values, he decided to create a radio group for the Rating item. With the item node of the Customers block selected in the Object Navigator, he clicked Create. He then opened the Property Palette for the new item and set properties as follows:

Name: RATING

Item Type: Radio Group

Data Type: Number

Column Name: Rating

Canvas: CUSTOMER_CV

He opened the CUSTOMER_CV canvas in the Layout Editor, but the Rating item does not appear. How can he get the Rating item to appear on the canvas?

  1. Create a Radio Button for the radio group.

  2. Set the Visible property of the Rating item to Yes.

  3. Delete the radio group and create it in the Layout Editor because a radio group that is created in the Object Navigator will not appear on a canvas.

  4. Change the width of the Rating item because the default width of a radio group is 0, so it does not appear on the canvas.
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A Correct answer
Explanation

In Oracle Forms, a radio group itself is just a container - it doesn't appear on the canvas until you add radio button items to it. The radio group holds the data value and logic, but each option must be implemented as a separate radio button item. Creating the radio group in Object Navigator is fine, but you must then create radio buttons for it to display.

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