PostgreSQL Interview Questions
Check out 30 of the most common PostgreSQL interview questions and take an AI-powered practice interview
What is PostgreSQL and when should you use it?
How do you connect to PostgreSQL?
What are the basic data types in PostgreSQL?
How do you create and manage databases in PostgreSQL?
What are tables/collections in PostgreSQL?
How do you perform CRUD operations in PostgreSQL?
What are primary keys and foreign keys in PostgreSQL?
How do you write basic queries in PostgreSQL?
What are joins/lookups in PostgreSQL?
How do you handle NULL values in PostgreSQL?
What are constraints in PostgreSQL?
How do you import/export data in PostgreSQL?
How do you optimize queries in PostgreSQL?
What is indexing in PostgreSQL?
How do you handle transactions in PostgreSQL?
What are stored procedures/functions in PostgreSQL?
How do you implement data validation in PostgreSQL?
What is normalization/denormalization in PostgreSQL?
How do you handle concurrent access in PostgreSQL?
What are triggers in PostgreSQL?
How do you implement full-text search in PostgreSQL?
What is query execution plan in PostgreSQL?
How do you handle large datasets in PostgreSQL?
What are views in PostgreSQL?
How do you monitor performance in PostgreSQL?
How do you implement sharding in PostgreSQL?
What is replication strategy in PostgreSQL?
How do you handle distributed PostgreSQL?
What are advanced optimization techniques in PostgreSQL?
How do you implement high availability in PostgreSQL?
Frequently Asked Questions
What is PostgreSQL used for?
PostgreSQL is widely used for storing, managing, and retrieving data efficiently. It's valued for its performance, reliability, and extensive ecosystem.
How long does it take to learn PostgreSQL?
Learning PostgreSQL basics typically takes 1-3 months of dedicated study. Achieving proficiency requires 6-12 months of practice and real-world projects. Mastery comes with years of experience and continuous learning.
What are the job prospects for PostgreSQL developers?
PostgreSQL developers are in high demand across industries. With strong PostgreSQL skills, you can pursue roles in database administration, data engineering, with competitive salaries ranging from ₹6-20 LPA.
What prerequisites are needed for learning PostgreSQL?
Understanding of data structures and basic SQL are helpful prerequisites for learning PostgreSQL.
Which companies use PostgreSQL?
Major companies using PostgreSQL include Google, Amazon, Microsoft, Meta, Netflix, and many more. PostgreSQL is adopted across startups to enterprise organizations.
Introduction
Preparing for database interviews with PostgreSQL expertise? Database knowledge is fundamental for any developer working with data-driven applications.
PostgreSQL is widely used for data storage, retrieval, and management. Understanding its architecture, query optimization, and best practices is essential.
This guide covers PostgreSQL interview questions ranging from basic CRUD operations to advanced topics like indexing, replication, and performance tuning.
Whether you're a backend developer or data engineer, these questions will help you demonstrate strong database expertise.
