Entities are top level objects that should be unique and valid json identifier. It should be start with character and can contains characters, numbers and underscore only, it should not contain space or any special characters.

When generating code it will create folder having entity name in app folder. It will contains all CURD related code including components, services, interfaces etc.

You can add one or more entities in single json schema file.

{
  "user": {                     // entity name
    "firstName": {              // property name
    ...                        
    }
  },
  "product": {
  ...
  },
  "sale": {
  ...
  },
  ...n
}