[ecfisa]

Hola Yugo.

Revisa este ejemplo:

/* Crear tabla */
void TablaCreate(String tableName) {
  TTable *tb = new TTable(NULL);

  tb->Close();
  tb->DatabaseName = ExtractFilePath(Application->ExeName); // ruta
  tb->TableName = tableName;
  tb->TableType = ttParadox;
  tb->FieldDefs->Clear();
  tb->FieldDefs->Add("ID", ftAutoInc, 0, false);
  tb->FieldDefs->Add("NOMBRE", ftString, 30, false);
  tb->FieldDefs->Add("DOMICILIO", ftString, 30, false);
  tb->FieldDefs->Add("TELEFONO", ftString, 15, false);
  tb->IndexDefs->Clear();
  tb->IndexDefs->Add("", "ID", TIndexOptions()<< ixPrimary << ixUnique);
  tb->IndexDefs->Add("INDNOMBRE", "NOMBRE", TIndexOptions()<< ixCaseInsensitive);
  tb->CreateTable();

  delete tb;
}

/* Verificar nombre */
bool isValidName(String str) {
  if (str == "" || (str[1]>='0'&&str[1]<='9'))
    return false;

  for(int i=1; i< str.Length(); i++) {
    char c = UpCase(str[i]);
    if(!((c>='A'&&c<='Z') || (c>='0'&&c<='9') || (c=='_')))
      return false;
  }

  return true;
}

/* Ejemplo de uso */
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  String name;
  bool ok;
  do {
    if(InputQuery("Crear tabla", "Nombre", name))
      ok = isValidName(name);
  } while ((name != "") && !ok);

  if (name != "")
    TablaCreate(name);
}

Saludos