Documentation

As you develop an application, you might need to add fields to your database. This is a normal process of iterative development: you get an idea for a new feature, or it’s suggested to you, and that feature requires additional data in the database. New fields added to service.xml are not automatically added to the database. To add the fields, you must do one of two things:
2. Run the cleanServiceBuilder Gradle task (also supported on Maven and Ant), which drops your tables so they get re-created the next time your app is deployed.