Arquivos no banco de dados, executados pelo delphi...

procedure AbrirArquivo(F: String);
var
  r: String;
begin
  case ShellExecute(Application.Handle, nil, PChar(F), nil, nil, SW_SHOWNORMAL) of
    ERROR_FILE_NOT_FOUND: r := ´The specified file was not found.´;
    ERROR_PATH_NOT_FOUND: r := ´The specified path was not found.´;
    ERROR_BAD_FORMAT: r := ´The .EXE file is invalid (non-Win32 .EXE or error in .EXE image).´;
    SE_ERR_ACCESSDENIED: r := ´Windows 95 only: The operating system denied access to the specified file.´;
    SE_ERR_ASSOCINCOMPLETE: r := ´The filename association is incomplete or invalid.´;
    SE_ERR_DDEBUSY: r := ´The DDE transaction could not be completed because other DDE transactions were being processed.´;
    SE_ERR_DDEFAIL: r := ´The DDE transaction failed.´;
    SE_ERR_DDETIMEOUT: r := ´The DDE transaction could not be completed because the request timed out.´;
    SE_ERR_DLLNOTFOUND: r := ´Windows 95 only: The specified dynamic-link library was not found.´;
    SE_ERR_NOASSOC: r := ´There is no application associated with the given filename extension.´;
    SE_ERR_OOM: r := ´Windows 95 only: There was not enough memory to complete the operation.´;
    SE_ERR_SHARE: r := ´A sharing violation occurred.´;
  else
    Exit;
  end;
  ShowMessage(r);
end;

var
  FStream : TMemoryStream;

  //Ler
  FStream := TMemoryStream.Create;
  FStream.Position := 0;
  FStream.CopyFrom(IBQuery1.CreateBlobStream(IBQuery1.FieldByName(´arq_blob´),bmRead),0);
  FStream.SaveToFile(IBQuery1.FieldByName(´arq_nome´).asString);
  FStream.free;

  //Gravar
  FStream := TMemoryStream.create;
  FStream.position := 0;
  FStream.LoadFromFile(´C:\ARQUIVO.EXE´);
  if FStream <> nil then
  begin
    FStream.Position := 0;
    IBQuery1.SQL.Clear;
    IBQuery1.SQL.Add(´INSERT INTO SUATABELA (ARQ_NOME,ARQ_BLOB) VALUES (´);
    IBQuery1.SQL.Add(´´´ARQUIVO.EXE´´,´);
    IBQuery1.SQL.Add(:ARQ_BLOB)´);
    IBQuery1.ParamByName(´ARQ_BLOB´).LoadFromStream(FStream,ftBlob);
    IBQuery1.ExecSQL;
  end;
  FStream.Free;