@Override
  public boolean clear() {

    try {
      boolean bDelete = bTable.delete();
      boolean uDelete = uTable.delete();
      boolean cDelete = cTable.delete();
      return bDelete && uDelete && cDelete;
    } catch (SQLException e) {
      Logger.getLogger(EmbeddedDB.class.getName()).log(Level.SEVERE, e.getMessage(), e);
    }

    return false;
  }