New data in datagrid

So I created a datagrid which has a database that I imported from excel, in Preview I add information and it stays there, however I know that when I will publish my app it will not hold the information made in preview. How can I make the new information stay even after publishing. I have an ADD and EDIT and DELETE button, that is how i edit my information in Preview.  
1 answers

If you have the Excel importer widget in your app, you can import data after publishing.

Alternately, you may use Data Snapshot to share a snapshot of the development database. For details, please read: