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<head> {% include analytics.html %} </head> <table width="750"> <thead> <tr> <th width="200">LB3 Commands</th> <th width="200">LB4 Commands</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td> <code>lb</code> or <code>lb app</code> </td> <td> <code>lb4</code> or <code>lb4 app</code> </td> <td> Create a new <a href="https://loopback.io/doc/en/lb4/Application.html">application</a> </td> </tr> <tr> <td> <code>lb datasource</code> </td> <td> <code>lb4 datasource</code> </td> <td> Create a new <a href="https://loopback.io/doc/en/lb4/DataSources.html">datasource</a> </td> </tr> <tr> <td> <code>lb model</code> </td> <td> <code>lb4 model</code> </td> <td> Create a new <a href="https://loopback.io/doc/en/lb4/Model.html">model</a>. 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 <code>lb4 rest-crud</code> to create a configuration file that allows you to avoid having to create a repository and controller. </td> </tr> <tr> <td> <code>lb relation</code> </td> <td> <code>lb4 relation</code> </td> <td> Create a <a href="https://loopback.io/doc/en/lb4/Relations.html">relation</a> between two models </td> </tr> <tr> <td> <code>lb swagger</code> </td> <td> <code>lb4 openapi</code> </td> <td> 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. </td> <td> </td> </tr> </tbody> </table>