android local database backup and recovery how to engage, what ideas?

            
Data to back up the local database, the demand requirements can also be restored.

The database can be backed up copy to sd card, but the recovery, how to copy into it?
Reply:
All the original data can not Delete off? Not removed. Db file. Just delete all the data.

Then, open your SQLite database backup, select *, then one by one Insert the past, you can not?

I have food. I also guess