Migrations allow you to use Ruby to define changes to your database schema, making it possible to use a version control system to keep things synchronised with the actual code.
For further explanation see UnderstandingMigrations, UsingMigrations, OracleAddIndex
API docs: http://api.rubyonrails.com/classes/ActiveRecord/Migration.html
category: Glossary
Supported Databases:
Migrations are currently supported in MySQL, PostgreSQL, SQLite, SQL Server, and Oracle (all supported databases except DB2).
Migrations allow you to use Ruby to define changes to your database schema, making it possible to use a version control system to keep things synchronised with the actual code.
For further explanation see UnderstandingMigrations, UsingMigrations, OracleAddIndex
API docs: http://api.rubyonrails.com/classes/ActiveRecord/Migration.html
category: Glossary
Supported Databases:
Migrations are currently supported in MySQL, PostgreSQL, SQLite, SQL Server, and Oracle (all supported databases except DB2).