text: from typing import Any, Dict
  
  from app.app import db
  
  Model: Any = db.Model
  
  
  class Camera(Model):
      __tablename__ = 'cameras'
  
      Name = db.Column(db.String(10), unique=True)
      images = db.relationship('Image', backref='camera', lazy=True)
  
      @classmethod
      def from_dict(cls, camera_dict: Dict[str, Any]) -> 'Camera':
          return cls(
              Name=camera_dict['Name']
          )
  
      def to_dict(self) -> Dict[str, Any]:
          to_dict = super().to_dict()
          to_dict.update(
              {
                  'Name': self.Name
              }
          )
          return to_dict
  
      def update_from_dict(self, camera_dict: Dict[str, Any]) -> None:
          super().update_from_dict(camera_dict)
          if 'Name' in camera_dict:
              self.Name = camera_dict['Name']
  
  
  class ProductType(Model):
      __tablename__ = 'product_types'
  
      Name = db.Column(db.String(4), unique=True)
      images = db.relationship('Image', backref='product_type', lazy=True)
  
      @classmethod
      def from_dict(cls, type_dict: Dict[str, Any]) -> 'ProductType':
          return cls(
              Name=type_dict['Name']
          )
  
      def to_dict(self) -> Dict[str, Any]:
          to_dict = super().to_dict()
          to_dict.update(
              {
                  'Name': self.Name
              }
          )
          return to_dict
  
      def update_from_dict(self, type_dict: Dict[str, Any]) -> None:
          super().update_from_dict(type_dict)
          if 'Name' in type_dict:
              self.Name = type_dict['Name']
  
  
  class Image(Model):
      __tablename__ = 'images'
  
      Name = db.Column(db.String(31), unique=True)
      URL = db.Column(db.Text)
      Sol = db.Column(db.Integer, nullable=False)
      DetatchedLabel = db.Column(db.Boolean)
      CameraID = db.Column(
          db.Integer,
          db.ForeignKey('cameras.ID'),
          nullable=False,
      )
      ProductTypeID = db.Column(
          db.Integer,
          db.ForeignKey('product_types.ID'),
          nullable=False,
      )
  
      @classmethod
      def from_dict(cls, image_dict: Dict[str, Any]) -> 'Image':
          return cls(
              Name=str(image_dict['Name']),
              URL=str(image_dict['URL']),
              Sol=int(image_dict['Sol']),
              DetatchedLabel=bool(image_dict['DetatchedLabel']),
              CameraID=int(image_dict['CameraID']),
              ProductTypeID=int(image_dict['ProductTypeID']),
          )
  
      def to_dict(self) -> Dict[str, Any]:
          to_dict = super().to_dict()
          to_dict.update(
              {
                  'Name': self.Name,
                  'URL': self.URL,
                  'Sol': self.Sol,
                  'DetatchedLabel': self.DetatchedLabel,
                  'CameraID': self.CameraID,
                  'camera': self.camera.to_dict(),
                  'ProductTypeID': self.ProductTypeID,
                  'product_type': self.product_type.to_dict(),
              }
          )
          return to_dict
  
      def update_from_dict(self, image_dict: Dict[str, Any]) -> None:
          super().update_from_dict(image_dict)
          if 'Name' in image_dict:
              self.Name = image_dict['Name']
          if 'URL' in image_dict:
              self.URL = image_dict['URL']
          if 'Sol' in image_dict:
              self.Sol = image_dict['Sol']
          if 'DetatchedLabel' in image_dict:
              self.DetatchedLabel = image_dict['DetatchedLabel']
          if 'CameraID' in image_dict:
              self.CameraID = image_dict['CameraID']
          if 'ProductTypeID' in image_dict:
              self.ProductTypeID = image_dict['ProductTypeID']
  