PostgreSQL Essentials Exam Preparation Material | PostgreSQL Essentials Certification v13

Prepare for the PostgreSQL Essentials with reliable study materials, practice questions, and key exam insights.

Prepare for the PostgreSQL Essentials PostgreSQL Essentials Certification v13 exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

Which psql meta-command displays the structure of a specific table including columns, types, and constraints?

A. \d tablename
B. \dt tablename
C. DESCRIBE tablename;
D. SHOW TABLE tablename;

Question#2

What is the purpose of the autovacuum parameter in PostgreSQL?

A. To manually run vacuum
B. To enable automatic vacuuming of tables
C. To compress database files
D. To backup data automatically

Question#3

You want to gracefully terminate a user's connection to the database.
Which function should you use?

A. pg_kill_backend(pid)
B. pg_terminate_backend(pid)
C. pg_cancel_backend(pid)
D. pg_disconnect_backend(pid)

Question#4

Which query displays the name and size of all databases in your cluster using a meaningful unit?

A. SELECT datname, pg_database_size(datname) FROM pg_database;
B. SELECT datname, pg_size_pretty(pg_database_size(datname)) AS size FROM pg_database;
C. SELECT name, size FROM pg_database;
D. SHOW DATABASE SIZE;

Question#5

Which pg_restore option allows you to drop database objects before recreating them?

A. -d
B. -c or --clean
C. -r
D. --drop-all

Exam Code: PostgreSQL Essentials
Q & A: 71 Q&As         Updated:  Nov 02,2026

 

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What This PostgreSQL Essentials Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current PostgreSQL Essentials exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This PostgreSQL Essentials Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the PostgreSQL Essentials exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

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CertQueen independently develops its certification study materials for educational purposes. The practice questions are not copied from, recalled from, or presented as live or official exam questions.

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