⤷ Check if BDE installed

If you want to know is dbe installed, then you may use dbiInit function.
And don't forget to add DbiProcs in uses chapter

procedure TForm1.Button1Click(Sender: TObject);
begin
  try
    dbiInit(nil);
  except
    ShowMessage('BDE is not installed');
  end;
  dbiExit;
end;
More for developers