Oracle Transaction Control Statements: Beginner-Level Quiz

Oracle Transaction Control Statements Quiz

Welcome to the "Transaction Control Statements" quiz! This quiz is designed to assess your understanding of essential concepts related to managing transactions in Oracle Database. You’ll explore key statements such as COMMIT, ROLLBACK, and SAVEPOINT, and learn how they help maintain data integrity and control changes. Whether you're preparing for an interview or looking to solidify your knowledge, this quiz will challenge your grasp of transaction management. Let’s get started!

1 / 20

If a transaction is not explicitly committed or rolled back, the changes are saved automatically by Oracle. True or False?

True

False

2 / 20

In a(n) ______ backup of the database, only the last modifications to the database are copied.

Differential

Incomplete

Full

Transaction Log

3 / 20

If several concurrent transactions are executed over the same data set and the second transaction updates the database before the first transaction is finished, the _____ property is violated and the database is no longer consistent.

Isolation

Atomicity

Consistency

Durability

4 / 20

The three basic techniques to control deadlocks are: deadlock ______, deadlock detection, and deadlock avoidance.

Commits

Prevention

Rollback

Prohibition

5 / 20

Deadlocks are possible only when one of the transactions wants to obtain a(n) ______ lock on a data item.

Complete

Exclusive

Binary

Shared

6 / 20

A transaction in Oracle ensures that either all of the command succeeds or none of the commands succeeds. True or False?

True

False

7 / 20

The Oracle RDBMS uses the ______ statement to declare a new transaction start and its properties.

BEGIN TRANSACTION

COMMIT

BEGIN

SET TRANSACTION

8 / 20

The rule of transaction tells that either all the statements in the transaction should be executed (all are committed) successfully or none of those statements to be executed (i.e. all are canceled or rollbacked). Is this statement true?

Yes

I have no idea

Probably

9 / 20

When the recovery procedure uses _____, the database is immediately updated by transaction operations during the transaction's execution, even before the transaction reaches its commit point.

Unbuffered

Deferred write

Immediate write

Write-through

10 / 20

The ______ statement is used to end a successful transaction.

DONE

COMMIT

END

QUIT

11 / 20

A DBMS uses a transaction ______ to keep track of all transactions that update the database

Statement

Log

Table

Block

12 / 20

According to the ANSI SQL standard, when does a transaction begin?

When the first SQL statement is encountered

With the BEGIN TRANSACTION command

With use of the START command

With the BEGIN command

13 / 20

All transactions are controlled and executed by the DBMS (subject to some limitations) to guarantee database _____.

Design

Consistency

Uniqueness

Integrity

14 / 20

Which of the following statements is not correct;

COMMIT indicates that the transaction was completed successfully and all the DML performed since the start of the transaction are committed to the database as well as frees the resources held by the transaction.

SET TRANSACTION indicates that the transaction is started and is optional.

TRIGGER is used for dividing or breaking a transaction into multiple units so that the user has a chance of rolling back a transaction up to a point or location.

ROLLBACK will roll back the data to its previous state.

15 / 20

______ ensures that once transaction changes are done, they cannot be undone or lost, even in the event of a system failure.

Isolation

Consistency

Atomicity

Durability

16 / 20

A ______ database state is one in which all data integrity constraints are satisfied.

Secure

Fixed

Consistent

Complete

17 / 20

What is the default behavior of Oracle in the absence of a COMMIT or ROLLBACK?

Changes are automatically rolled back

Changes are automatically saved

An error is raised

Changes remain in a pending state

18 / 20

What is the use of the ROLLBACK command in oracle?

It is used for dividing or breaking a transaction into multiple units so that the user has a chance of rolling back a transaction up to a point or location.

It is used in controlling the boundaries of a transaction.

It is used to undo the transactions that have not already been saved permanently to the database and get back to the initial state from where the transaction was started.

It is used for inserting / updating / deleting data to/from a table then we are performing a transaction on a table.

19 / 20

Although the ______ locking approach improves the availability of data, its management requires high overhead.

Table-level

Row-level

Database-level

Page-level

20 / 20

Once we execute the commit statement, we cannot revert back the changes. True or False?

True

False

Your score is

The average score is 0%

Oracle transaction control statements focus on managing database transactions to ensure data integrity and consistency.

Key commands to be explored include COMMIT, ROLLBACK, and SAVEPOINT, which allow users to save, undo, or manage changes within a transaction.

This quiz is designed to test your understanding of effectively controlling data modifications in Oracle databases.

Best of luck!