# File lib/kirbybase.rb, line 3435
    def initialize(table, index_fields)
        @last_update = Time.new
        @idx_arr = []
        @table = table
        @index_fields = index_fields
        @col_poss = index_fields.collect {|i| table.field_names.index(i) }
        @col_names = index_fields
        @col_types = index_fields.collect {|i|
         table.field_types[table.field_names.index(i)]}
    end