A:  This project demonstrates listing the field structure from a given table, using the Fields and IndexDefs arrays.

 Noel Rice
 Borland Technical Support

Note:  This code works with 16 bit only.

procedure TForm1.Button1Click(Sender: TObject);
const
  MyFielddefs: array[ftUnknown..ftGraphic] of string = ('ftUnknown', 'ftString', 'ftSmallint', 'ftInteger', 'ftWord', 'ftBoolean', 'ftFloat', 'ftCurrency', 'ftBCD', 'ftDate', 'ftTime', 'ftDateTime', 'ftBytes', 'ftVarBytes', 'ftBlob', 'ftMemo', 'ftGraphic');

var
  i, Indx: integer;
  Definition: string;
begin
  for i := 0 to Table1.FieldCount - 1 do begin
    Definition := Table1.Fields[i].DisplayLabel;
    Definition := Definition + ' ' + MyFieldDefs[Table1.Fields[i].DataType];
    Table1.IndexDefs.Update;
    if Table1.Fields[i].IsIndexField then begin
      Indx := Table1.IndexDefs.Indexof(Table1.Fields[i].Name);
      if Indx > -1 then
        if ixPrimary in Table1.IndexDefs[Indx].Options then
          Definition := Definition + ' (Primary)';
    end;
    Listbox1.Items.Add(Definition);
  end;
end;

Here is a version that works with the 32 bit version (by Lloyd):

procedure TForm1.Button1Click(Sender: TObject);
const
  MyFielddefs: array[ftUnknown..ftTypedBinary] of string =
    ('ftUnknown', 'ftString', 'ftSmallint', 'ftInteger', 'ftWord',
    'ftBoolean', 'ftFloat', 'ftCurrency', 'ftBCD', 'ftDate', 'ftTime',
    'ftDateTime', 'ftBytes', 'ftVarBytes', 'ftAutoInc', 'ftBlob', 'ftMemo',
    'ftGraphic', 'ftFmtMemo', 'ftParadoxOle', 'ftDBaseOle', 'ftTypedBinary');

var
  i, Indx: integer;
  Definition: string;
begin
  for i := 0 to Table1.FieldCount - 1 do begin
    Definition := Table1.Fields[i].DisplayLabel;
    Definition := Definition + ' ' + MyFieldDefs[Table1.Fields[i].DataType];
    Table1.IndexDefs.Update;
    if Table1.Fields[i].IsIndexField then begin
      Indx := Table1.IndexDefs.Indexof(Table1.Fields[i].Name);
      if Indx > -1 then
        if ixPrimary in Table1.IndexDefs[Indx].Options then
          Definition := Definition + ' (Primary)';
    end;
    Listbox1.Items.Add(Definition);
  end;
end;