Category: SQL & Databases

60 questions in SQL & Databases.

How to use JSONB in PostgreSQL

· SQL & Databases

Store, index, and query semi-structured data efficiently using PostgreSQL binary JSON format.

What are PostgreSQL data types

· SQL & Databases

Explore PostgreSQL rich type system including arrays, ranges, geometric types, and custom composites.

What are MySQL triggers

· SQL & Databases

Automate actions in response to insert, update, or delete operations using MySQL triggers.

How to use MySQL stored procedures

· SQL & Databases

Encapsulate reusable SQL logic on the server with MySQL stored procedures, variables, and control flow.

What is the InnoDB engine

· SQL & Databases

Understand the InnoDB storage engine, its ACID compliance, row-level locking, and crash recovery features.

What are database transactions

· SQL & Databases

Understand ACID properties, isolation levels, and how transactions ensure reliable database operations.