diff --git a/pkg/repository/repository.go b/pkg/repository/repository.go
index bf399ac..e91b80e 100644
--- a/pkg/repository/repository.go
+++ b/pkg/repository/repository.go
@@ -83,333 +83,3 @@ func New(databaseURL *url.URL, flogger logger.Logger) (Repository, error) {
 		return nil, fmt.Errorf("Unsupported repository scheme: %v", databaseURL.Scheme)
 	}
 }
-
-// Repository represent a repository where all devices, sensors and measured
-// values are stored.
-// type Repository struct {
-// 	database db.Database
-// }
-
-// // AddDevices to the repository
-// func (repo *Repository) AddDevices(devices ...*types.Device) error {
-// 	return repo.database.InsertDevices(context.Background(), devices...)
-// }
-
-// // AddMeasuredValues to the repository
-// func (repo *Repository) AddMeasuredValues(measuredValues ...*types.MeasuredValue) error {
-// 	return repo.database.InsertMeasuredValues(context.Background(), measuredValues...)
-// }
-
-// // AddOrUpdateDevices to the repository
-// func (repo *Repository) AddOrUpdateDevices(devices ...*types.Device) error {
-// 	return repo.database.InsertOrUpdateDevices(context.Background(), devices...)
-// }
-
-// // AddOrUpdateMeasuredValues to the repository
-// func (repo *Repository) AddOrUpdateMeasuredValues(measuredValues ...*types.MeasuredValue) error {
-// 	return repo.database.InsertOrUpdateMeasuredValues(context.Background(), measuredValues...)
-// }
-
-// // AddOrUpdateSensors to the repository
-// func (repo *Repository) AddOrUpdateSensors(sensors ...*types.Sensor) error {
-// 	return repo.database.InsertOrUpdateSensors(context.Background(), sensors...)
-// }
-
-// // AddSensors to the repository
-// func (repo *Repository) AddSensors(sensors ...*types.Sensor) error {
-// 	return repo.database.InsertSensors(context.Background(), sensors...)
-// }
-
-// // Close closes the repository and prevents new queries from starting. Close
-// // then waits for all queries that have started processing on the server to
-// // finish.
-// func (repo *Repository) Close() error {
-// 	return repo.database.Close()
-// }
-
-// // DisableSensorsByNames disable all sensors which match bei their name
-// func (repo *Repository) DisableSensorsByNames(sensorNames ...string) error {
-// 	sensors, err := repo.GetSensors()
-// 	if err != nil {
-// 		return err
-// 	}
-
-// 	matchedSensors := make([]*types.Sensor, 0)
-// 	for _, sensor := range sensors {
-// 		for _, sensorName := range sensorNames {
-// 			if strings.Compare(sensor.Name, sensorName) == 0 {
-// 				sensor.Enabled = false
-// 				matchedSensors = append(matchedSensors, sensor)
-// 			}
-// 		}
-// 	}
-
-// 	return repo.UpdateSensors(matchedSensors...)
-// }
-
-// // EnableSensorsByNames enable all sensors which match bei their name
-// func (repo *Repository) EnableSensorsByNames(sensorNames ...string) error {
-// 	sensors, err := repo.GetSensors()
-// 	if err != nil {
-// 		return err
-// 	}
-
-// 	matchedSensors := make([]*types.Sensor, 0)
-// 	for _, sensor := range sensors {
-// 		for _, sensorName := range sensorNames {
-// 			if strings.Compare(sensor.Name, sensorName) == 0 {
-// 				sensor.Enabled = true
-// 				matchedSensors = append(matchedSensors, sensor)
-// 			}
-// 		}
-// 	}
-
-// 	return repo.UpdateSensors(matchedSensors...)
-// }
-
-// // GetDevice returns a device by his id. If no device has been found, the
-// // function returns nil.
-// func (repo *Repository) GetDevice(deviceID string) (*types.Device, error) {
-// 	return repo.database.SelectDevice(context.Background(), deviceID)
-// }
-
-// // GetDevices returns all devices. If no devices has been found, the function
-// // returns nil.
-// func (repo *Repository) GetDevices() ([]*types.Device, error) {
-// 	return repo.database.SelectDevices(context.Background())
-// }
-
-// // GetHumidity returns a humidity value by id
-// func (repo *Repository) GetHumidity(humidityID string) (*types.MeasuredValue, error) {
-// 	return repo.database.SelectHumidity(context.Background(), humidityID)
-// }
-
-// // GetPressure returns a pressure value by id
-// func (repo *Repository) GetPressure(pressureID string) (*types.MeasuredValue, error) {
-// 	return repo.database.SelectPressure(context.Background(), pressureID)
-// }
-
-// // GetSensor returns a sensor by his id. If no sensor has been found, the
-// // function returns nil.
-// func (repo *Repository) GetSensor(sensorID string) (*types.Sensor, error) {
-// 	return repo.database.SelectSensor(context.Background(), sensorID)
-// }
-
-// // GetSensors returns all sensors. If no sensors has been found, the function
-// // returns nil.
-// func (repo *Repository) GetSensors(models ...string) ([]*types.Sensor, error) {
-// 	sensors, err := repo.database.SelectSensors(context.Background())
-// 	switch {
-// 	case err != nil:
-// 		return nil, err
-// 	case len(models) > 0:
-// 		cachedSensors := make([]*types.Sensor, 0)
-// 	LOOP:
-// 		for i := range sensors {
-// 			for j := range models {
-// 				if strings.ToLower(sensors[i].Model) == strings.ToLower(models[j]) {
-// 					cachedSensors = append(cachedSensors, sensors[i])
-// 					continue LOOP
-// 				}
-// 			}
-// 		}
-// 		return cachedSensors, nil
-// 	case len(models) <= 0:
-// 		fallthrough
-// 	default:
-// 		return sensors, err
-// 	}
-// }
-
-// // GetSensorsByDeviceID returns all sensors by a device id. If no sensor has
-// // been found by the id, the function returns nil.
-// func (repo *Repository) GetSensorsByDeviceID(deviceID string) ([]*types.Sensor, error) {
-// 	cachedSensors := make([]*types.Sensor, 0)
-// 	sensors, err := repo.GetSensors()
-// 	if err != nil {
-// 		return nil, err
-// 	}
-
-// 	for _, sensor := range sensors {
-// 		if strings.Compare(sensor.DeviceID, deviceID) == 0 {
-// 			cachedSensors = append(cachedSensors, sensor)
-// 		}
-// 	}
-
-// 	return cachedSensors, nil
-// }
-
-// // GetTemperature returns a temperature value by id
-// func (repo *Repository) GetTemperature(pressureID string) (*types.MeasuredValue, error) {
-// 	return repo.database.SelectTemperature(context.Background(), pressureID)
-// }
-
-// // RemoveDevices removes devices by their ids from the repository. Additional
-// // all sensors and measured values, which are in relation with the device
-// // respectively the sensors will also be deleted.
-// func (repo *Repository) RemoveDevices(deviceIDs ...string) error {
-// 	return repo.database.DeleteDevices(context.Background(), deviceIDs...)
-// }
-
-// // RenameSensors all sensors which match by their current name to the new name
-// func (repo *Repository) RenameSensors(oldName string, newName string) error {
-// 	sensors, err := repo.GetSensors()
-// 	if err != nil {
-// 		return err
-// 	}
-
-// 	matchedSensors := make([]*types.Sensor, 0)
-// 	for _, sensor := range sensors {
-// 		if strings.Compare(sensor.Name, oldName) == 0 {
-// 			sensor.Name = newName
-// 			matchedSensors = append(matchedSensors, sensor)
-// 		}
-// 	}
-
-// 	return repo.UpdateSensors(matchedSensors...)
-// }
-
-// // RemoveSensors removes sensors by their ids from the repository. Additional
-// // all measured values, which are in relation with the sensor will also be
-// // deleted.
-// func (repo *Repository) RemoveSensors(sensorIDs ...string) error {
-// 	return repo.database.DeleteSensors(context.Background(), sensorIDs...)
-// }
-
-// // RemoveSensorsByNames removes all sensors which match bei their name
-// func (repo *Repository) RemoveSensorsByNames(sensorNames ...string) error {
-// 	sensors, err := repo.GetSensors()
-// 	if err != nil {
-// 		return err
-// 	}
-
-// 	matchedSensorIDs := make([]string, 0)
-// 	for _, sensor := range sensors {
-// 		for _, sensorName := range sensorNames {
-// 			if strings.Compare(sensor.Name, sensorName) == 0 {
-// 				matchedSensorIDs = append(matchedSensorIDs, sensor.ID)
-// 			}
-// 		}
-// 	}
-
-// 	return repo.RemoveSensors(matchedSensorIDs...)
-// }
-
-// // UpdateDevices update devices which are stored into the repository by their
-// // id. The id of the device can not be updated.
-// func (repo *Repository) UpdateDevices(devices ...*types.Device) error {
-// 	return repo.database.UpdateDevices(context.Background(), devices...)
-// }
-
-// // UpdateSensors update sensors which are stored into the repository by their
-// // id. The id of the sensor can not be updated.
-// func (repo *Repository) UpdateSensors(sensors ...*types.Sensor) error {
-// 	return repo.database.UpdateSensors(context.Background(), sensors...)
-// }
-
-// // New returns a new repository based on the data source name (dsn)
-// func New(dsnURL *url.URL, flogger logger.Logger) (*Repository, error) {
-// 	database, err := db.New(dsnURL, flogger)
-// 	if err != nil {
-// 		return nil, err
-// 	}
-
-// 	return &Repository{
-// 		database: database,
-// 	}, nil
-// }
-
-// type OptImport struct {
-// 	Sensors      bool
-// 	Humidities   bool
-// 	Pressures    bool
-// 	Temperatures bool
-// }
-
-// func Import(sourceDSNURL *url.URL, destDNSURL *url.URL, flogger logger.Logger, optImport OptImport) error {
-
-// 	importMap := map[string]bool{
-// 		"humidities":   optImport.Humidities,
-// 		"pressures":    optImport.Pressures,
-// 		"temperatures": optImport.Temperatures,
-// 	}
-
-// 	// enable sensors if one measured value is enabled
-// 	if !optImport.Sensors {
-// 		for key, value := range importMap {
-// 			if value {
-// 				flogger.Info("Enable import option sensors. It's required as foreign key for %v", key)
-// 				optImport.Sensors = true
-// 			}
-// 		}
-// 	}
-
-// 	// Initialize source repository
-// 	sourceRepo, err := New(sourceDSNURL, flogger)
-// 	if err != nil {
-// 		return fmt.Errorf("Failed to open the source repo: %w", err)
-// 	}
-// 	defer sourceRepo.Close()
-
-// 	// Initialize destination repository
-// 	destRepo, err := New(destDNSURL, flogger)
-// 	if err != nil {
-// 		return fmt.Errorf("Failed to open the destination repo: %w", err)
-// 	}
-// 	defer destRepo.Close()
-
-// 	// AddOrUpdate: Devices
-// 	ctx := context.Background()
-// 	devices, err := sourceRepo.database.SelectDevices(ctx)
-// 	if err != nil {
-// 		return fmt.Errorf("Failed to fetch devices from source repo: %w", err)
-// 	}
-
-// 	flogger.Debug("Found %v devices", len(devices))
-
-// 	for i := range devices {
-// 		err := destRepo.AddOrUpdateDevices(devices[i])
-// 		if err != nil {
-// 			return fmt.Errorf("Failed to add or update device %v into dest repo: %w", devices[i].Name, err)
-// 		}
-// 	}
-
-// 	// AddOrUpdate: Sensors
-// 	if optImport.Sensors {
-// 		sensors, err := sourceRepo.database.SelectSensors(ctx)
-// 		if err != nil {
-// 			return fmt.Errorf("Failed to fetch sensors from source repo: %w", err)
-// 		}
-
-// 		flogger.Debug("Found %v sensors", len(sensors))
-
-// 		for i := range sensors {
-// 			err := destRepo.AddOrUpdateSensors(sensors[i])
-// 			if err != nil {
-// 				return fmt.Errorf("Failed to add or update sensor %v into dest repo: %w", sensors[i].Name, err)
-// 			}
-// 		}
-// 	}
-
-// 	for key, f := range map[string]func(context.Context) ([]*types.MeasuredValue, error){
-// 		"humidities":   sourceRepo.database.SelectHumidities,
-// 		"pressures":    sourceRepo.database.SelectPressures,
-// 		"temperatures": sourceRepo.database.SelectTemperatures,
-// 	} {
-// 		if importMap[key] {
-// 			measuredValues, err := f(ctx)
-// 			if err != nil {
-// 				return fmt.Errorf("Failed to select %v from source repo: %w", key, err)
-// 			}
-
-// 			flogger.Debug("Found %v %v values", len(measuredValues), key)
-
-// 			err = destRepo.AddOrUpdateMeasuredValues(measuredValues...)
-// 			if err != nil {
-// 				return fmt.Errorf("Failed to add or update %v into dest repo: %w", key, err)
-// 			}
-// 		}
-// 	}
-
-// 	return nil
-// }