title: Core Data, Fetch only 15 rows, and then the next 15 fetched on event trigger
body: <p>I have pagination implemented in the backend, and i get the cells from the server.</p>
  
  <p>The data is divided into batches, and i have to check, if the batch already exists in the database, i dont have to fetch that from the server.</p>
  
  <p>To make that work , i need to just fetch first 15 rows, and then get the next 15 on event trigger.</p>
  
  <p>is there any way to do so?</p>
  
  <pre><code>[fetchRequest setFetchBatchSize:15];
  </code></pre>
  
  <p>The above keeps fetching automatically as we scroll.</p>