Oracle Triggers And Cursors: Intermediate-Level Quiz

November 25, 2024 by Kobi Okuah

Oracle Triggers And Cursors

Welcome to the "Oracle Triggers and Cursors" quiz! This quiz will test your understanding of key concepts related to triggers, which automatically execute in response to database events, and cursors, which facilitate row-by-row data manipulation. Delve into their types, best practices, and practical applications in Oracle Database. Let’s see how well you know these essential tools for effective database management!

1 / 20

In SQL, which command is used to enable and disable a database trigger?

ALTER TABLE

ALTER TRIGGER

MODIFY TRIGGER

ALTER DATABASE

2 / 20

A trigger can be created within a cursor. True or False?

True

False

3 / 20

How many types of cursors are there?

4 / 20

Which of the following is not an advantage of cursors?

Cursors are faster than while loops

They help perform the row-by-row processing and row-wise validation on each row

Better concurrency control can be achieved by using cursors

They use more resources each time, which may result in a network round trip

5 / 20

A cursor is activated and thus created in response to any SQL statement. True or False?

True

False

6 / 20

In which scenario is a dynamic cursor recommended?

When you need to view and process real-time changes made to the database during the execution of cursor operations

When you want to work with a stable result set that does not change during the cursor operations

When you want to optimize the performance of your database operations by minimizing the resources needed for data retrieval

7 / 20

What are the two types of cursors?

Internal and External

Stationary and Hyper

Implicit and Explicit

Temporary and Permanent

8 / 20

How many types of PL/SQL Cursor are there?

9 / 20

Which prefixes are available to Oracle triggers?

: old only

: new only

Both :new and : old

Neither :new nor : old

10 / 20

A cursor can be referred to as a pointer to the context. The context area is a memory area that Oracle creates when processing the SQL statement. True or False?

True

False

11 / 20

Triggers are very difficult to view which makes the debugging also difficult. True or False?

True

False

12 / 20

Which clause is used to open the cursor?

BEGIN

START

RESUME

OPEN

13 / 20

Which of the following is NOT an Oracle-supported trigger?

AFTER

INSTEAD OF

BEFORE

DURING

14 / 20

Triggers are not supported for;

Insert

Delete

Update

Views

15 / 20

What are the different in triggers?

Drop, Comment

Define, Create

Insert, Update, Delete

All of the mentioned

16 / 20

Triggers ________ enabled or disabled

Always

Can be

Ought to be

Cannot be

17 / 20

Which of the following is not an advantage of triggers?

They help keep track of all the changes within the database

They also help in maintaining the integrity constraints

They help perform the row-by-row processing and row-wise validation on each row

None of the above

18 / 20

The variables in the triggers are declared using

–

19 / 20

The CREATE TRIGGER statement is used to create the trigger. THE _____ clause specifies the table name on which the trigger is to be attached. The ______ specifies that this is an AFTER INSERT trigger.

For, insert

for insert, on

On, for insert

None of the mentioned

20 / 20

Cursor variables are also known as REF CURSORs. True or False?

True

False

Your score is

The average score is 0%

Oracle triggers and cursors focuses on automating tasks and managing data within Oracle databases. They allow for controlled retrieval and processing of query results, particularly for handling multi-row queries.

This quiz is designed for intermediate-level developers and database administrators who are familiar with basic SQL and PL/SQL programming.

Best of luck!