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Which three statements are true about the PL/SQL Packages panel in the Forms debugger?
PL/SQL Packages Panel: This panel is used only to browse and examine the PL/SQL packages which are been instantiated while executing the form.
You have created a complex menu structure with several types of menu objects. To which objects would you assign menu commands?
The Menu Editor is a graphical design facility for laying out, modifying, and viewing menu modules and their objects. You can use the Menu Editor to carry out all of your menu design work.
Note:
To use the Menu Editor to create a basic structure for your menu, perform the following steps:
1 .
With the SUMMIT_MENU module selected, perform one of the following actions to invoke the Menu Editor:
Double-click the icon to the left of the module
Right-click the module and select Menu Editor
Select Tools > Menu Editor from the Forms Builder menu
2 .
When you invoke the Menu Editor, it automatically creates the main menu and one menu item. The main menu is the menu whose items, which can be menu items or submenus, show in the menu bar when you run a form.
In the Object Navigator, change the name of the main menu to MAIN_MENU in the same way that you changed the name of the menu module.
3 .
In the Object Navigator, change the name of the menu item to File.
4 .
Note that the item's display label in the Menu Editor remains the same.
The label is the text that is displayed for the menu item at run time. The label may differ from the name. You use the name programmatically, and it must follow PL/SQL naming conventions.
Change the label of the menu item by double-clicking <New_Item> in the Menu Editor and typing the new label of File.
5 .
Create two menu items under File. In the Menu Editor, select File, then click Create Down twice.
6 .
In the Menu Editor, relabel the menu items to Save and Exit.
Note that creating menu items under the File object creates a FILE_MENU object as a menu with two items under it. Also, when you relabel the items in the Menu Editor, the names of the items, as shown in the Object Navigator, also change.
7 .
Create another submenu of the main menu and label it Edit by performing the following steps:
In the Menu Editor, select the File node.
Click Create Right.
Relabel the new menu Edit.
8 .
In a similar fashion to the way you created the File menu items, create two items for the Edit menu labeled Copy and Paste.
9 .
You can also use the Object Navigator to add a menu item.
Under the Edit_Menu in the Object Navigator, select the Items node and click Create.
10 .
In the same way as you did with other items, relabel the new item in the Menu Editor with the label Cut, which also renames it in the Object Navigator.
You have been assigned to maintain the Orders form. Users complain that if the cursor is in the in the Orders block, they cannot navigate to the Order Items block by clicking a text item in that block. They must click the Next Block button to navigate from the Orders block to the Order Items block.
How should you investigate the source of the problem?
The Navigation Trap
You have seen that the Pre-and Post-navigation triggers fire during navigation, and when they fail the internal cursor attempts to return to the current item(SYSTEM.CURSOR_ITEM).The diagram below illustrates the navigation trap. This can occur when a Pre-or Post-navigation trigger fails and attempts to return the logical cursor to its initial item. However, if the initial item has a Pre-Text-Item trigger that also fails the cursor has nowhere to go, and a fatal error occurs.
Note:
Be sure to code against navigation trigger failure
The Credit_Rating item in the Customers block of an Order Entry form must be restricted to three possible values: Good, Poor, or Null (the latter value indicates that the credit rating has not been determined). Order entry clerks must be able to update this item to any of the preceding three values.
You want to change the item to a check box labeled "Credit Risk" that should be selected if the customer has poor credit, the check box should not be selected if the customer's credit rating is good or undetermined.
You change the item type to Checkbox, set other properties as shown in the Exhibit, and then run your form and insert three records: two with good credit and the check box deselected, and one with poor credit and the check box selected. You commit the data and query the records, with the following result set:
The first two records show an undetermined credit rating, although your intention was to set the value to Good for these customers. What change must you make in the properties of the Credit_Ratinq item to enable values of Good, Poor, and Null to be entered?
Incorrect answers:
F: A check box is not limited to two values.
You have designed a form with two content canvases. The window for the first canvas was created implicitly, and you have not changed its default properties.
You want users to be able to navigate between the canvases easily while viewing both simultaneously. Therefore, you create a second window, changing only its name from the default properties.
However, when you test the form, you find that you are unable to close either window. What must you do to provide this functionality?
