Schema Migration in PHP CodeIgniter

Well, schema migration was there in CodeIgniter since very long time. I have never used it before, but few days back I was just curious about how it actually works and is it similar to “South Migration app” available for Django framework. Since I know a little bit of Django, so I decided to explore CodeIgniter migration library and see if it is as good as south. In this article I will try to explain what schema migration is and how to use it. So, let’s start.

What is schema migration?
Schema migration is basically an effective way of versioning your database schema. So, you can move your DB schema back and forth any time you want. Another advantage of using schema migration is deployment of the application of any number of servers becomes a lot easier. It also helps in automating the deployment process.