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1Z0-151 Online Practice Questions and Answers

Questions 1

If a display item has a Calculation Mode of Formula, you can call a program unit to perform the calculation.

A. True

B. False

Show Answer

Questions 2

View the Exhibit.

The Departments form has form level triggers defined as shown in the Exhibit. You have enabled array DML for the Departments block by setting its DML array size to 5 and setting the Primary Key property of Department id to Yes. You set runtime preferences for Forms Builder to use array processing.

You want to test that array processing is actually occurring, so, as shown in the Exhibit, the On- Update, On-Delete, and on insert triggers have code that:

1.

Displays a message to indicate which trigger is firing for which record?

2.

Does the thing (either updates, deletes, or inserts)

The other triggers simply display a message, indicating the trigger that is firing.

You run the form from Forms Builder, but from the messages, you can tell that array processing is not occurring. What should you change so that array DML gets implemented?

A. Delete the "On-" triggers; these triggers remove default processing, including array processing.

B. Set the DML array size to a value of 10 or greater; for array sizes loss than 10, array processing Is inefficient, and so is not performed.

C. Use the SYNCHRONIZE built-in after the MESSAGE built-in; otherwise, the message are not displayed until the processing is finished, giving the appearance that array processing is not taking place.

D. Set the Enforce Primary Key property of the Department block to Yes; it is not enough to just set the Department_Id to be the primary key.

Show Answer

Correct Answer: A

*

ON-INSERT

Override default processing for inserting a new row into the database during "post" processing Override the doDML() method in your entity class, and if theoperation equals DML_INSERT, then write code instead ofcalling the super.

*

ON-DELETE

Override default processing for deleting a row removed from the data block from the database during "post" processing Override the doDML() method in your entity class, and if theoperation equals DML_DELETE, then write code instead ofcalling the super.

*

ON-UPDATE

Override default processing for updating a row changed in the data block from the database during "post"

processing

Note: Use Array Processing

Both Forms Developer and Reports Developer are able to take advantage of the Oracle database server's

array processing capabilities. This allows records to be fetched from the database in batches instead of

one at a time, and results in significantly fewer calls to the database. The downside of array processing is

that more space is required on the execution platform for storing the arrays of records returned.

If load on the network becomes a major bottleneck in the production environment, then set the Developer

product's runtime ARRAYSIZE parameter to as large a value as possible for the execution environment.

Note 2:

Query Array Processing

The default behavior of Forms is to process records one at a time. With array processing, astructure

(array) containing multiple records is sent to or returned from the server for processing.Forms supports

both array fetch processing and array data manipulation language (DML)processing. For both querying

and DML operations, you can determine the array size to optimizeperformance for your needs.

Note 3: You can enable array processing for queries by:

*Setting preferences:

-Select Edit > Preferences.

-Click the Runtime tab.

-Select the Array Processing check box.

* Setting block properties: -In the Object Navigator, double -click the node of the block to display the PropertyPalette. -Under the Records category, set the Query Array Size property to a number that represents the number of records in the array for array processing

Questions 3

You have written a Forms application that your users log in to with their database login. Which Forms component is utilized first when a user runs the application?

A. Forms Client (applet)

B. Forms Runtime

C. Forms Servlet

D. Forms Listener Servlet

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