>DataInMemory</code> and <code>DataOnDisk</code>.</p><p><strong>DataInMemory</strong> data is loaded into memory on initialisation, resulting in faster processing of data at the cost of RAM.</p><p><strong>DataOnDisk</strong> only the metadata is loaded into memory, with data being accessed from the disk only when needed. This is slower than <code>DataInMemory</code> but allows processing of datasets much larger than the available RAM.</p><hr><h4 id=advanced>Advanced</h4><p>To create a data representation fo