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

What are the after triggers?

Triggers generated after a particular operation

These triggers run after an insert, views, update or delete on a table

These triggers run after an insert, update or delete on a table

All of the mentioned

3 / 20

How many types of triggers are there?

4 / 20

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

True

False

5 / 20

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

True

False

6 / 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

7 / 20

The Implicit cursors are created to process the ____ statements.

TCL

DCL

DDL

DML

8 / 20

What are the different in triggers?

Drop, Comment

Define, Create

Insert, Update, Delete

All of the mentioned

9 / 20

The variables in the triggers are declared using

–

10 / 20

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

True

False

11 / 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

12 / 20

A trigger can be used when you want something to automatically happen when some actions occur. True or False?

True

False

13 / 20

A __________ is a special kind of a store procedure that executes in response to certain action on the table like insertion, deletion or updation of data.

Cursor

Function

Procedure

Trigger

14 / 20

What are the two types of cursors?

Internal and External

Stationary and Hyper

Implicit and Explicit

Temporary and Permanent

15 / 20

Which clause is used to open the cursor?

BEGIN

START

RESUME

OPEN

16 / 20

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

True

False

17 / 20

Which prefixes are available to Oracle triggers?

: old only

: new only

Both :new and : old

Neither :new nor : old

18 / 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

19 / 20

Cursors are stored within the database and come into action when specific conditions match. True or False?

True

False

20 / 20

Triggers are not supported for;

Insert

Delete

Update

Views

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!