Using SQL-Lite(Android)

1. Using the code found in this Tutorial recreate the Android application shown in section 4 of the Tutorial.
2. How is the database created?
3. When is the database deleted?
4. Change the application so that when a duplicated comment is added, rather than adding it as a new comment, display a number at the end of the existing comment indicating how many times the comments has been added? To help achieve this goal, add a new counter column to the Comment table and a new counter instance variable in the class comment to keep track of the number.