Rails Database Migrations Cheatsheet

Rails provides a ton of different ways to modify the database schema via Active Record migrations. It's a very powerful and flexible way to handle schema changes while keeping all updates under version control. However, all the migration methods, options, conventions, and their variations can be overwhelming, and hence, confusing.I found myself reaching out for the Rails migration guide and the Rails API almost every time I wanted to create a new Rails migration to make database changes. So last night I decided to spend a few hours to note down all the common database operations I use most of the time.