# File lib/kirbybase.rb, line 1942
    def KBTable.valid_data_type?(data_type, value)
        case data_type
        when /:String|:Blob/
            return false unless value.respond_to?(:to_str)
        when :Memo
            return false unless value.is_a?(KBMemo) 
        when :Blob
            return false unless value.is_a?(KBBlob) 
        when :Boolean
            return false unless value.is_a?(TrueClass) or value.is_a?(
             FalseClass)
        when :Integer
            return false unless value.respond_to?(:to_int)
        when :Float
            return false unless value.respond_to?(:to_f)
        when :Time
            return false unless value.is_a?(Time)     
        when :Date
            return false unless value.is_a?(Date)
        when :DateTime
            return false unless value.is_a?(DateTime)
        when :YAML
            return false unless value.respond_to?(:to_yaml)
        end
    
        return true
    end