190+ PostgreSQL MCQ With Online Practice Test

PostgreSQL, often referred to as Postgres, is a powerful open-source relational database management system (RDBMS) known for its scalability, robustness, and extensibility. It offers advanced features like ACID compliance, support for complex data types, and support for both SQL and NoSQL data. PostgreSQL is highly regarded for its performance, security, and reliability, making it a popular choice for applications ranging from small startups to large enterprises. Its active developer community continuously enhances and maintains the software. PostgreSQL is an excellent choice for data storage, analysis, and management in various domains, including web applications, data warehousing, and geospatial applications.

Practice Test

11. How can you install PostgreSQL on a Linux system?

Answer: Using the 'yum install postgresql' command

12. What is the default superuser in a new PostgreSQL installation?

Answer: postgres

13. Which command is used to create a new PostgreSQL user?


14. What is the purpose of the 'pg_hba.conf' file in PostgreSQL?

Answer: It defines access control rules

15. What is the default port number for PostgreSQL?

Answer: 5432

16. What is the role of the 'pg_ctl' utility in PostgreSQL?

Answer: It manages PostgreSQL clusters

17. In PostgreSQL, what is the purpose of the 'psql' command?

Answer: It connects to the PostgreSQL database

18. Which authentication method requires a user to provide a password for access?

Answer: MD5

19. What is the purpose of the 'initdb' command in PostgreSQL?

Answer: It initializes a new database cluster

20. What is the default authentication method for PostgreSQL on Unix-like systems?

Answer: Password
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