LD classes (e.g., drivers, connections). This
is a virtual Class: No objects may be created from it.</p>
    </div>


    <div class="section level2">
    <h2 id="details">Details<a class="anchor" aria-label="anchor" href="#details"></a></h2>
    <p>More generally, DataSHIELD defines a very small set of classes and generics that
allows users and applications perform meta-analysis with a common interface.  The
virtual classes are `DSDriver` that individual drivers extend,
`DSConnection` that represent instan