Oracle Database Management: Intermediate-Level Quiz

Oracle Database Management Quiz

Welcome to the "Oracle Database Management" quiz! This quiz tests your knowledge of key practices like performance tuning, backup and recovery, and security management. Whether preparing for a database role or enhancing your skills, let's dive in!

1 / 20

Which of the following is not true about modifying table columns?

You can add a column at any time as long as it is a NULL column

You cannot increase or decrease the number of decimal places

You can drop a column at any time

You can increase the number of characters in character columns or the number of digits in numeric columns

2 / 20

MySQL belongs to which category of database management systems?

Network DBMS

Hierarchical DBMS

Object-oriented DBMS

Relational DBMS

3 / 20

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

INSTEAD OF

BEFORE

AFTER

DURING

4 / 20

Which of the following is the subset of SQL commands used to manipulate Oracle Database structures, including tables?

Data Definition Language(DDL)

Data Manipulation Language(DML)

DDL and DML

None of the Mentioned

5 / 20

What is the purpose of the Oracle Instance?

It manages the memory and process structures used by the database

It stores information about the backup and recovery of the database

It provides access to the data stored in the database

It stores information about the users of the database

6 / 20

Which of the following RDBMS supports full fledged client server application development?

Ingress

Oracle 7.1

dBase V

FoxPro 2.1

7 / 20

To obtain the structure of an Oracle table, the command to use is:

DESC TABLE [TableName]

STRUCTURE [TableName]

DESCRIBE [TableName]

DESCRIBE STRUCTURE [TableName]

8 / 20

A _______________ is used to logically group data together.

Tablespace

Database

Object

Datafiles

9 / 20

What type of failure occurs when Oracle fails due to an operating system or computer hardware failure?

Media Failure

Application failure

Rollback failure

Instance Failure

10 / 20

How many layers does the Oracle database have?

11 / 20

SQL*Plus will finish the statement and execute it when the user types in this:

A semicolon ( ; ) followed by [Enter]

A left slash ( ) followed by [Enter]

A colon ( : ) followed by [Enter]

A period ( . ) followed by [Enter]

12 / 20

Oracle allows the ORDER BY clause in view definitions. True or False?

True

False

13 / 20

Which of the following is not true about modifying table columns?

You can increase the number of characters in character columns or the number of digits in numeric columns

You cannot increase or decrease the number of decimal places

You can drop a column at any time

You can add a column at any time as long as it is a NULL column

14 / 20

What is the purpose of the Oracle Data Dictionary?

It stores information about the users of the database

It stores information about the backup and recovery of the database

It stores information about the performance of the database

It stores information about the structure of the database

15 / 20

Which of the following is not true of SQL views?

Using the Oracle Database Configuration Assistant

Using the SQL CREATE DATABASE command

Using the Oracle-supplied database creation procedures

None of the above is correct

16 / 20

Which of the following is correct about Oracle?

Oracle was built in 1977

OracleDB is another for it

Oracle is a relational database management system

All of the above

17 / 20

Which of the following SQL phrase is not supported by Oracle?

DROP SEQUENCE [SequenceName]

CREATE SEQUENCE [SequenceName]

ON UPDATE CASCADE

ON DELETE CASCADE

18 / 20

Which of the following statements about sequence is not true?

Sequences guarantee valid surrogate key values

NextVal and CurrVal are both sequence methods

A sequence is an object that generates a sequential series of unique numbers

Sequences are most often used to provide values for surrogate keys

19 / 20

An Oracle System Change Number (SCN):

is a value that is incremented whenever a dirty read occurs.

is a value that keeps track of explicit locks

is incremented whenever a deadlock occurs

is a value that is incremented whenever database changes are made

20 / 20

What is the purpose of the Oracle Database?

It manages the memory and process structures used by the database

It provides access to the data stored in the database

It stores and manages the data used by the application

All of the above

Your score is

The average score is 0%

Oracle database management covers the core concepts and tasks of maintaining, configuring, and optimizing an Oracle database.

This includes user management, storage configuration, performance tuning, backups, and security settings.

This quiz is essential for database administrators and developers to ensure the database operates efficiently and securely.

All the best!