code: protected function saveMigration(array $tables)
  	{
  		try
  		{
  			$tables = serialize($tables);
  			return Db::query("insert into migrations(host, tables) values(?, ?)", [gethostname(), $tables], $this->dbName, false);
  		}
  		catch (PDOException $e)
  		{
  			error_log($e->getMessage());
  			return false;
  		}
  	}
docs: Save migration in database
  
  @param Table[] $tables current tables
  
  @return bool false if fails