However robust the application may be, there should always be provision for a reliable disaster recovery mechanism. In the unlikely event of a crash of the application, backup of data should be available for getting back to business soon. This requires a reliable backup mechanism and a simple retrieval procedure. PMP has provisions for both.
A task could be scheduled to backup the database contents periodically. The backup will be stored as a .zip file. All sensitive data will remain encrypted in that file. You can backup this file in your secure, secondary storage.