POSTGRESQL DATABASE INTERVIEW QUESTIONS

What is auto increment in PostgreSQL, and why is it used?

How does PostgreSQL implement auto increment functionality?

Can you use auto increment for multiple columns in the same table in PostgreSQL?

What is the difference between the SERIAL and BIGSERIAL data types in PostgreSQL?

How does PostgreSQL handle sequence values when a row is deleted?

What are some potential issues with using auto increment in PostgreSQL, and how can they be mitigated?

Explain how to reset a sequence in PostgreSQL. Why might this be necessary?

How can concurrent transactions affect auto increment sequences in PostgreSQL, and what mechanisms ensure consistency?

Discuss the impact of auto increment on replication and sharding in PostgreSQL.

What considerations should be made when designing a database schema in PostgreSQL that relies heavily on auto increment columns for scalability and performance?