Oracle Exam 1Z0-151 Topic 6 Question 20 Discussion

C: You can use the attachable PL/SQL libraries to implement a flexible message function formessages that are displayed programmatically by the built-in routines MESSAGE orCHANGE_ALERT_MESSAGE, or by assigning a message to a display item from a triggeror procedure.

D: Creating Calculated Items

Change the Item Type to Display Item.

Set the Calculation Mode property to Formula.

Set the Formula property to the required formula.

Incorrect answers:

B: Display items and text items are fairly similar and share many of the same properties. The biggest difference between the two is that a user can navigate to a text item and change its value. This is not possible with a display item. As its name implies, it merely displays information.

Note: Display items do not allow any user interaction - they merely display data and never accept cursor focus.

Use a display item for the following situations:

* Null-canvas fields

* Context fields

* Fields that act as titles or prompts