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LB3 Commands | LB4 Commands | Description
--- | --- | ---
`lb` or `lb app` | `lb4` or `lb4 app` | Create a new application
`lb datasource` | `lb4 datasource` | Create a new datasource
`lb model` | `lb4 model` | Create a new model. In LB3, this would create the model, but you would automatically get all the model methods and remote methods. In LB4, this command only creates the model; you must also create a repository to handle the CRUD operations of your model, and you must create a controller to define your model's REST API endpoints. Alternatively, you can use `lb4 rest-crud` to create a configuration file that allows you to avoid having to create a repository and controller.
`lb relation` | `lb4 relation` | Create a relation between two models
`lb swagger` | `lb4 openapi` | In LB3, create a fully functioning application using an API defined in the Swagger 2.0 specification. In LB4, create a fully functioning application using an API defined in either the Swagger 2.0 or the OpenAPI 3.0 specification. |