SQL Basic Interview: Beginner-Level Quiz

SQL Basic Interview Quiz

Welcome to the "Basic SQL Interview Quiz"! This quiz is tailored to assess your foundational knowledge of SQL, the essential language for managing and querying relational databases. You'll encounter a variety of questions covering key concepts such as data retrieval, filtering, sorting, and basic functions. Whether you're preparing for an interview or simply brushing up on your skills, this quiz will help you gauge your understanding of SQL fundamentals. Let’s get started and see how well you can navigate the world of databases!

1 / 20

Which of the following is an Oracle feature?

Management

Analytics

Security

All of the above

2 / 20

With Oracle database, data is managed in an ____ manner.

All of the above

Integrated

Open

Complete

3 / 20

The Oracle ____ Application Clusters feature is not included in the Oracle Personal Edition.

Real

Virtual

Augmented

None

4 / 20

In which year Oracle Database has been created?

1987

1997

1977

1967

5 / 20

Oracle Database is also known as ____.

OracleAB

OracleCB

OracleBB

OracleDB

6 / 20

Due to its ability to eliminate redundant data, ____ databases are more popular than flat files.

Analytical

Structural

None of the above

Relational

7 / 20

An Oracle database is an ____ from Oracle Corporation.

MDBMS

None of the above

RDBMS

ADBMS

8 / 20

How does MySQL Cluster (NDB) handle data partitioning?

Does not support data partitioning

Only partitions data on request

Manually partitions data based on user settings

Automatically partitions data across all data nodes

9 / 20

How does the "max_connections" setting affect a MySQL server?

Limits the number of open transactions

Sets the maximum number of allowable connections

Limits the number of database users

Restricts query execution time

10 / 20

In MySQL, what does sharding help with?

Data archiving

Data recovery

Data encryption

Data scalability

11 / 20

How does MySQL Cluster achieve high availability?

By synchronously replicating data across nodes in real-time

By periodically backing up data

By using disk mirroring

By using shared storage

12 / 20

MySQL belongs to which category of database management systems?

Hierarchical DBMS

Network DBMS

Object-oriented DBMS

Relational DBMS

13 / 20

What does the following MySQL command do?

CREATE DATABASE SampleDB;

Creates a new database named SampleDB

Creates a new schema named SampleDB

Creates a new table named SampleDB

Deletes the database SampleDB

14 / 20

What does the DISTINCT keyword do in a SQL query?

Removes duplicates from results

Creates a distinct file

Counts rows

Orders results

15 / 20

What does the GROUP BY statement do in a SQL query?

Sorts the output

Groups data based on one or more columns

Modifies data in a group

Deletes groups of data

16 / 20

What is the main difference between CHAR and VARCHAR data types in MySQL?

CHAR stores binary data, VARCHAR does not

CHAR has unlimited length, VARCHAR is limited

CHAR is variable-length, VARCHAR is fixed-length

CHAR is fixed-length, VARCHAR is variable-length

17 / 20

Which SQL statement is used to remove data from a MySQL database?

Clear

Remove

Erase

Delete

18 / 20

what does DDL stand for in MySQL?

Data Derivation Language

Data and Database Limitation

Developmentally Delayed Learners

Data Definition Language

19 / 20

The select statement is used to retrieve data from one or more tables in a MySQL database. TRUE or FALSE

True

False

20 / 20

What are the main components of MySQL cluster?

MySQL Query, Data Server, and NDB Cluster

Database Architecture, MySQL Management, and Robust Nodes

Data Nodes, MySQL Server Nodes, and Management Nodes

Management Nodes, MySQL Robust Data, MySQL Database Terminology

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The average score is 0%

These basic SQL interview questions focus on fundamental concepts and skills in SQL (Structured Query Language) that are commonly tested in entry-level database positions.

It also covers basic SQL commands such as SELECT, INSERT, UPDATE, and DELETE. Additionally, it covers clauses like WHERE, ORDER BY, GROUP BY, and HAVING.

It tests knowledge of foundational SQL syntax, querying, and data manipulation.

Best of luck!