ementation of DSI based on the <a href="https://www.obiba.org/pages/products/opal/" class="external-link">Opal</a> data warehouse. See also <a href="https://datashield.github.io/DSLite/" class="external-link">DSLite</a> for a server-less implementation of DSI for local datasets.</p>
<p>These S4 classes and generic methods are meant <strong>to be used for implementing connection to a DataSHIELD-aware data repository.</strong></p>
</div>
<div class="section level2">
<h2 id="higher-level-functions">Higher Leve