getDatabaseWriteConnection() public method

public getDatabaseWriteConnection ( ) : Varien_Db_Adapter_Interface
return Varien_Db_Adapter_Interface
 /**
  * @param $path
  * @param $scope
  * @param $scope_id
  *
  * @return int Number of affected rows
  */
 public function deleteValue($path, $scope, $scope_id)
 {
     $write = $this->_magento->getDatabaseWriteConnection();
     return $write->delete($this->_table_name, array('scope = ?' => $scope, 'scope_id = ?' => $scope_id, 'path = ?' => $path));
 }