title: iOS CoreData bulk/batch insert (sqlite TRANSACTION)
body: <p>I have 16000 records in <em>.txt</em> file and I want to insert all data in database using core data.<br>
  But operation performance is not good, taking very much time to read-insert data from <em>.txt</em> file to database (using CoreData).</p>
  
  <p>In android, I am using <a href="https://www.sqlite.org/lang_transaction.html" rel="nofollow noreferrer">SQLite TRANSACTION</a> for achieving best performance and it's working fine.
  But in iOS I'm unable to find a way. </p>
  
  <p><strong>Note:</strong> I have already tried the following post, but all provided reference URLs are showing <strong>Error 404</strong>: 
  <a href="https://stackoverflow.com/questions/4145888/ios-coredata-batch-insert">iOS CoreData batch insert?</a></p>