# File lib/rbase/record.rb, line 108
    def get_value(name)
      name = name.to_s.upcase.to_sym
      return @values_changed[name] if @values_changed.has_key?(name)
      return nil if new_record?
      column = @table.column(name)
      raise UnknownColumnError.new(name) unless column
      @values_cached[name] ||= column.unpack(@data[column.offset, column.size])
    end