O'Reilly logo

Mastering Yii by Charles R. Portwood II

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Writing database migrations

When building and maintaining modern web applications, the underlying structure of our database may need to change to account for changes in requirements or scopes. To ensure that our database schema can evolve in tandem with our source code, Yii2 provides built-in support to manage database migrations. Using database migrations, we can treat our database as an extension of the source code and easily change it when our source code changes.

An overview of schema

When working with database migrations, we'll often be working with the yii\db\Schema class. When paired properly, we can often write our migrations in a way that enables them to be run across a variety of database types. For example, when working locally, we might ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required