Oracle SQL Fundamentals: Beginner-Level Quiz

Oracle SQL Fundamentals Quiz

Welcome to the Oracle SQL Fundamentals Quiz! This quiz is designed to test your foundational knowledge of SQL in Oracle databases. You’ll encounter questions on essential commands, data retrieval, manipulation, and basic query structures.

By completing this quiz, you'll reinforce your understanding of SQL basics and build confidence for more advanced topics.

1 / 20

SQL Server program code that is executed instead of an SQL command that needs to be processed is called a(n):

Begin trigger

BEFORE trigger

AFTER trigger

INSTEAD OF trigger

2 / 20

The result of a SQL SELECT statement is a(n) ________.

Report

Table

File

3 / 20

A ________ is a program that performs some common action on database data and that is stored in the database.

Trigger

None of the above

Pseudofile

Stored procedure

4 / 20

STATEMENT-level triggers are executed only once for the entire statement. True or False?

False

True

5 / 20

With which type of SQL Server recovery model, is no logging done?

Full recovery

Bulk-logged recovery

Simple recovery

Differential recovery

6 / 20

What is an advantage of placing computations in SQL views?

All of the above

To make saving of data easier

None of the above

To save users from having to write an expression.

7 / 20

Embedded SQL is which of the following?

Hard-coded SQL statements in a trigger

The process of making an application capable of generating specific SQL code on the fly

Hard-coded SQL statements in a program language such as Java

Hard-coded SQL statements in a procedure

8 / 20

The benefits of a standard relational language include which of the following?

Increased dependence on a single vendor

Applications are not needed

All of the above

Reduced training cost

9 / 20

How many tables may be included with a join?

All of the above

10 / 20

VARCHAR and VARCHAR2 are used to store variable-length character strings.

False

True

11 / 20

Which of the clauses restricts the query to rows that meet a condition?

DISTINCT

WHERE

ORDER BY

DESCRIBE

12 / 20

To update an SQL view, the DBMS must be able to associate the column(s) to be updated with:

A particular row in a particular underlying table

A particular column in a particular row

A particular column in a particular underlying table

Particular column in a particular row

13 / 20

Which one of the following sorts rows in SQL?

SORT BY

ALIGN BY

ORDER BY

GROUP BY

14 / 20

Which of the following is true concerning a procedure?

They include procedural and SQL statements

You do not create them with SQL.

They do not need to have a unique name.

hey are the same thing as a function.

15 / 20

Each row of data in a table is uniquely identified by a:

Foreign Keys

Universal keys

Primary Keys

Unique Keys

16 / 20

Bind variables improve performance through caching and reusing, reducing the need for parsing. True or False?

False

True

17 / 20

Schemas improve query performance through quicker data retrieval by reducing the need for full table scans. True or False?

False

True

18 / 20

The UNION operator combines the results of two or more SELECT queries into a single result set – as if it came from a single query.

False

True

19 / 20

Which of this is not correct about Column Alias?

Is Oracle vendor specific

Is useful with calculations

Requires double quotation marks if it contains spaces or special characters or if it is case-sensitive

Renames a column heading

20 / 20

Which operator will be evaluated first in the following SELECT statement?

SELECT (2+3*4/2-5) FROM dual;

D. -

A. *

C. /

B. +

Your score is

The average score is 20%

Oracle SQL Fundamentals is a vital area of knowledge for anyone working with Oracle databases. It covers the basic operations of querying, manipulating, and organizing data in an efficient and structured manner.

This quiz is ideal for anyone looking to strengthen their foundational knowledge of SQL in the context of Oracle databases.

Good luck!