code>DataModel</code></a> instance is modeled as a collection of row objects that can be
 accessed by a zero-relative cursor (row index). The APIs provide mechanisms to position to a specified zero-relative
 row index, and to retrieve an object that represents the data that corresponds to the current row index.
 </p>

 <p>
 A concrete <a href="../../../jakarta/faces/model/DataModel.html" title="class in jakarta.faces.model"><code>DataModel</code></a> instance is attached to a particular collection of underl