如何在sails.js中迁移数据库？

所以我创建了一个新的Sails.js项目，然后运行

$ sails generate api user

如建议的加载页面。但是现在当我用服务器启动服务器时，sails lift出现错误：

sails lift               

info: Starting app...

-----------------------------------------------------------------

 Excuse my interruption, but it looks like this app
 does not have a project-wide "migrate" setting configured yet.
 (perhaps this is the first time you're lifting it with models?)

 In short, this setting controls whether/how Sails will attempt to automatically
 rebuild the tables/collections/sets/etc. in your database schema.
 You can read more about the "migrate" setting here:
 http://sailsjs.org/#/documentation/concepts/ORM/model-settings.html?q=migrate

 In a production environment (NODE_ENV==="production") Sails always uses
 migrate:"safe" to protect inadvertent deletion of your data.
 However during development, you have a few other options for convenience:

 1. safe  - never auto-migrate my database(s). I will do it myself (by hand) 
 2. alter - auto-migrate, but attempt to keep my existing data (experimental)
 3. drop  - wipe/drop ALL my data and rebuild models every time I lift Sails

What would you like Sails to do?

info: To skip this prompt in the future, set `sails.config.models.migrate`.
info: (conventionally, this is done in `config/models.js`)

我必须要运行帆迁移命令吗？我知道我会做类似的事情rake db:migrate。生成命令后，帆中的程序是什么？