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

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

Table-level

Row-level

Database-level

Page-level

2 / 20

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

True

False

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

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.

5 / 20

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

Statement

Log

Table

Block

6 / 20

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

Design

Consistency

Uniqueness

Integrity

7 / 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

8 / 20

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

Secure

Fixed

Consistent

Complete

9 / 20

If we are inserting / updating / deleting data to/from a table then we are performing a transaction on a table. True or False?

True

False

10 / 20

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

True

False

11 / 20

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

True

False

12 / 20

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

BEGIN TRANSACTION

COMMIT

BEGIN

SET TRANSACTION

13 / 20

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

Differential

Incomplete

Full

Transaction Log

14 / 20

In a ______ lock, the DBMS will lock an entire disk page.

Table-level

Database-level

Row-level

Page-level

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(n) ______ lock exists when concurrent transactions are granted Read access on the basis of a common lock.

Field-level

Binary

Exclusive

Shared

17 / 20

The ______ lock allows concurrent transactions to access the same row as long as they require the use of different fields within that row.

Page-level

Table-level

Field-level

Row-level

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

A transaction can include multiple SQL statements. True or False?

True

False

20 / 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

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!