l class="simple nested-toc-section">initTransaction
      <li><a class="reference" href="#initTransaction%2CDatabase"
    title="initTransaction(db: Database): Transaction">initTransaction(db: Database): Transaction</a></li>

  </ul>
  <ul class="simple nested-toc-section">len
      <li><a class="reference" href="#len%2CDatabase"
    title="len(db: Database): int">len(db: Database): int</a></li>

  </ul>
  <ul class="simple nested-toc-section">open
      <li><a class="reference" href="#open%2CDatabase%2Cstr