The Schema is the core of your app. You will design the data model and the behavior of your Control panel and API.
When creating a new project, your schema contains one table, the auhty table. This is the authentication (or user) table. It is required since the back end will depends on it for the login and privileges.
To access the Schema of your App, use the Edit Schema buttons in the control bar, top right.
You can either use the JSON or XML version.
The base schema will compile, you can try adding to the model. See the Schema Doc.