Database Systems Quiz

Database Systems Quiz

12th Grade

5 Qs

quiz-placeholder

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Database Systems Quiz

Database Systems Quiz

Assessment

Quiz

Instructional Technology

12th Grade

Practice Problem

Easy

Created by

Kalzcan undefined

Used 1+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a relational database?

A relational database is a type of database that does not allow data to be related.

A relational database is a type of database that stores and provides access to data points that are related to one another.

A relational database is a type of database that stores data in a non-relational manner.

A relational database is a type of database that only stores numerical data.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the concept of primary key in a relational database.

A primary key is used for sorting data in a table

A primary key uniquely identifies each record in a table and helps in establishing relationships between tables.

A primary key is not necessary for data integrity in a database

A primary key can have duplicate values in a table

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Write an SQL query to retrieve all records from a table named 'students'.

SELECT * FROM students;

SELECT * FROM all students;

SELECT * FROM table students;

SELECT * FROM student;

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the WHERE clause in SQL queries?

To sort rows in ascending order

To join multiple tables together

To update existing rows in the table

To filter rows based on a specified condition.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Discuss the difference between INNER JOIN and OUTER JOIN in SQL.

INNER JOIN compares and combines only the matching rows, whereas OUTER JOIN includes all rows from both tables.

OUTER JOIN compares and combines only the matching rows

INNER JOIN includes all rows from both tables

INNER JOIN combines all rows from both tables

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