Databases Medium-Level Quiz 4 > Data AI Revolution

Databases Medium-Level Quiz 4

This quiz consists of 10 multiple-choice questions, each designed to challenge your knowledge and enhance your understanding of database systems. It is suitable for students in database management courses, database administrators, or anyone looking to solidify their database knowledge.

1 / 10

Which of the following is a characteristic of a NoSQL database?

It uses tables to store data.

It can handle unstructured data.

It enforces strict schema constraints.

It does not support horizontal scaling.

2 / 10

What is a transaction log?

A record of all transactions made in the database

A summary of all database operations

A log of user activity

A backup of the database

3 / 10

Which SQL clause is used to filter records in a SELECT statement?

WHERE

HAVING

FILTER

GROUP BY

4 / 10

What is denormalization?

The process of organizing data to minimize redundancy

The process of adding redundancy to improve query performance

The process of indexing data

The process of removing indexes

5 / 10

Which of the following is NOT a type of database?

Relational Database

NoSQL Database

Graph Database

Text Database

6 / 10

In SQL, what keyword is used to restrict the number of rows returned by a query?

LIMIT

RESTRICT

MAX

TOP

7 / 10

What type of relationship exists when one record in a table can be associated with many records in another table?

One-to-One

One-to-Many

Many-to-One

Many-to-Many

8 / 10

Which of the following is a valid SQL statement to remove a table?

DROP TABLE table_name;

DELETE TABLE table_name;

REMOVE TABLE table_name;

CLEAR TABLE table_name;

9 / 10

What is the main purpose of the GROUP BY clause in SQL?

To sort the results

To filter records

To aggregate records

To join tables

10 / 10

Which of the following statements is true about a database transaction?

It is a sequence of operations performed as a single logical unit of work.

It cannot be rolled back.

It must consist of only one SQL statement.

It does not require a commit.

Your score is

The average score is 90%

0%

Databases Medium-Level Quiz 4

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