# Cracking PostgreSQL Interview Questions

DevFeed: [Cracking PostgreSQL Interview Questions](<https://devfeed.tech/articles/cracking-postgresql-interview-questions-349.md>)

Original publisher: [Read original article](<https://supabase.com/blog/cracking-postgres-interview>)

Author: Ant Wilson

Published: 2021-02-27T07:00:00Z

Content type: article

Language: en

Sources: [Supabase Blog](<https://devfeed.tech/sources/supabase-blog.md>)

Topics: [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [SQL](<https://devfeed.tech/topics/sql.md>), [Databases](<https://devfeed.tech/topics/databases.md>), [Structured-data](<https://devfeed.tech/topics/structured-data.md>), [Supabase](<https://devfeed.tech/topics/supabase.md>)

Tags: [data](<https://devfeed.tech/tags/data.md>), [database](<https://devfeed.tech/tags/database.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [index](<https://devfeed.tech/tags/index.md>), [interview](<https://devfeed.tech/tags/interview.md>), [modelling](<https://devfeed.tech/tags/modelling.md>), [performance](<https://devfeed.tech/tags/performance.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [schema](<https://devfeed.tech/tags/schema.md>), [software-engineer](<https://devfeed.tech/tags/software-engineer.md>), [sql](<https://devfeed.tech/tags/sql.md>), [technical](<https://devfeed.tech/tags/technical.md>)

## AI overview

A guide to preparing for PostgreSQL technical interviews, focusing on transactional SQL rather than analytical SQL. It covers relationship modeling, normalization, foreign keys, PostgreSQL data types such as JSONB, schemas, indexes, and query-plan analysis with EXPLAIN ANALYZE.

## Source excerpt

Understand the top PostgreSQL Interview Questions